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Species found: 2555
- Ablepharus alaicus ELPATJEVSKY, 1901
- Ablepharus kitaibelii COCTEAU, 1833
- Ablepharus pannonicus (LICHTENSTEIN, 1823)
- Ablepharus rueppellii (GRAY, 1839)
- Abronia cuchumatanus (SOLANO-ZAVALETA, NIETO-MONTES DE OCA & CAMPBELL, 2016)
- Abronia vasconcelosii (BOCOURT, 1872)
- Acanthocercus atricollis (SMITH, 1849)
- Acanthocercus cyanogaster (RÜPPELL, 1835)
- Acanthocercus phillipsii (BOULENGER, 1895)
- Acanthochelys radiolata (MIKAN, 1820)
- Acanthodactylus boskianus (DAUDIN, 1802)
- Acanthodactylus cantoris GÜNTHER, 1864
- Acanthodactylus hardyi HAAS, 1957
- Acanthodactylus schreiberi BOULENGER, 1878
- Acanthodactylus scutellatus (AUDOUIN, 1827)
- Acanthosaura armata (GRAY, 1827)
- Acanthosaura bintangensis WOOD, GRISMER, GRISMER, AHMAD, ONN & BAUER, 2009
- Acanthosaura coronata GÜNTHER, 1861
- Acanthosaura crucigera BOULENGER, 1885
- Acanthosaura titiwangsaensis WOOD, GRISMER, GRISMER, AHMAD, ONN & BAUER, 2009
- Achalinus spinalis PETERS, 1869
- Acrantophis dumerili JAN, 1860
- Acrantophis madagascariensis (DUMÉRIL & BIBRON, 1844)
- Acratosaura mentalis (AMARAL, 1933)
- Acrochordus javanicus HORNSTEDT, 1787
- Actinemys marmorata (BAIRD & GIRARD, 1852)
- Adelphicos quadrivirgatum JAN, 1862
- Adelphostigma occipitalis (JAN, 1863)
- Adolfus africanus (BOULENGER, 1906)
- Adolfus alleni (BARBOUR, 1914)
- Aeluroscalabotes felinus (GÜNTHER, 1864)
- Afronatrix anoscopus (COPE, 1861)
- Agama africana (HALLOWELL, 1844)
- Agama agama (LINNAEUS, 1758)
- Agama boensis MONARD, 1940
- Agama hartmanni PETERS, 1869
- Agama picticauda PETERS, 1877
- Agama planiceps PETERS, 1862
- Agama robecchii BOULENGER, 1891
- Agama rueppelli VAILLANT, 1882
- Agamura persica (DUMÉRIL, 1856)
- Agkistrodon bilineatus GÜNTHER, 1863
- Agkistrodon contortrix (LINNAEUS, 1766)
- Agkistrodon howardgloydi CONANT, 1984
- Agkistrodon laticinctus GLOYD & CONANT, 1934
- Agkistrodon piscivorus (LACÉPÈDE, 1789)
- Agkistrodon russeolus GLOYD, 1972
- Agkistrodon taylori BURGER & ROBERTSON, 1951
- Ahaetulla dispar (GÜNTHER, 1864)
- Ahaetulla fasciolata (FISCHER, 1885)
- Ahaetulla fronticincta (GÜNTHER, 1858)
- Ahaetulla mycterizans (LINNAEUS, 1758)
- Ahaetulla nasuta (LACÉPÈDE, 1789)
- Ahaetulla perroteti (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Ahaetulla prasina (BOIE, 1827)
- Aldabrachelys gigantea (SCHWEIGGER, 1812)
- Algyroides moreoticus BIBRON & BORY, 1833
- Alligator mississippiensis (DAUDIN, 1801)
- Alopoglossus amazonius RUTHVEN, 1924
- Alopoglossus angulatus (LINNAEUS, 1758)
- Alopoglossus atriventris DUELLMAN, 1973
- Alopoglossus brevifrontalis (BOULENGER, 1912)
- Alopoglossus carinicaudatus (COPE, 1876)
- Alopoglossus copii BOULENGER, 1885
- Alsophis rijgersmaei COPE, 1870
- Alsophylax loricatus STRAUCH, 1887
- Alsophylax pipiens (PALLAS, 1827)
- Altiphylax tokobajevi (EREMCHENKO & SZCZERBAK, 1984)
- Amalosia lesueurii (DUMÉRIL & BIBRON, 1836)
- Amalosia robusta (BOULENGER, 1885)
- Amblyrhynchus cristatus BELL, 1825
- Ameiva ameiva (LINNAEUS, 1758)
- Ameivula cipoensis ARIAS, CARVALHO, ZAHER & RODRIGUES, 2014
- Ameivula confusioniba (ARIAS, DE CARVALHO, RODRIGUES & ZAHER, 2011)
- Ameivula nativo (ROCHA, BERGALLO & PECCININI-SEALE, 1997)
- Ameivula nigrigula (ARIAS, DE CARVALHO, RODRIGUES & ZAHER, 2011)
- Ameivula ocellifera (SPIX, 1825)
- Ameivula pyrrhogularis (BASTO DA SILVA & ÁVILA-PIRES, 2013)
- Amerotyphlops brongersmianus (VANZOLINI, 1976)
- Amerotyphlops reticulatus (LINNAEUS, 1758)
- Amerotyphlops tasymicris (THOMAS, 1974)
- Amphibolurus centralis (LOVERIDGE, 1933)
- Amphibolurus muricatus (WHITE, 1790)
- Amphiesma stolatum (LINNAEUS, 1758)
- Amphiglossus astrolabi DUMÉRIL & BIBRON, 1839
- Amphisbaena alba LINNAEUS, 1758
- Amphisbaena bedai (VANZOLINI, 1991)
- Amphisbaena bilabialata (STIMSON, 1972)
- Amphisbaena caiari TEIXEIRA JR, DA VECHIO, NETO & RODRIGUES, 2014
- Amphisbaena camura COPE, 1862
- Amphisbaena carvalhoi GANS, 1965
- Amphisbaena frontalis VANZOLINI, 1991
- Amphisbaena fuliginosa LINNAEUS, 1758
- Amphisbaena kingii (BELL, 1833)
- Amyda cartilaginea (BODDAERT, 1770)
- Amyda ornata (GRAY, 1861)
- Anadia buenaventura BETANCOURT, REYES-PUIG, LOBOS, YÁNEZ-MUÑOZ & TORRES-CARVAJAL, 2018
- Anadia hollandi AMÉZQUITA, DAZA, BARRAGÁN-CONTRERAS, OREJUELA, BARRIENTOS & MAZARIEGOS, 2022
- Ancylodactylus barbouri (PERRET, 1986)
- Ancylodactylus kituiensis MALONZA & BAUER, 2022
- Andinosaura laevis (BOULENGER, 1908)
- Anguis colchica (NORDMANN, 1840)
- Anguis fragilis LINNAEUS, 1758
- Anguis graeca BEDRIAGA, 1881
- Anilios guentheri (PETERS, 1865)
- Anilios insperatus VENCHI, WILSON & BORSBOOM, 2015
- Anilius scytale (LINNAEUS, 1758)
- Anolis ahli BARBOUR, 1925
- Anolis allisoni BARBOUR, 1928
- Anolis allogus BARBOUR & RAMSDEN, 1919
- Anolis alutaceus COPE, 1861
- Anolis angusticeps HALLOWELL, 1856
- Anolis apletophallus KÖHLER & SUNYER, 2008
- Anolis auratus DAUDIN, 1802
- Anolis australis (KÖHLER, ZIMMER, MCGRATH & HEDGES, 2019)
- Anolis bahorucoensis NOBLE & HASSLER, 1933
- Anolis baleatus (COPE, 1864)
- Anolis barbouri (SCHMIDT, 1919)
- Anolis barkeri SCHMIDT, 1939
- Anolis bartschi (COCHRAN, 1928)
- Anolis beckeri BOULENGER, 1881
- Anolis bimaculatus (SPARRMAN, 1784)
- Anolis bonairensis RUTHVEN, 1923
- Anolis brasiliensis VANZOLINI & WILLIAMS, 1970
- Anolis brunneus COPE, 1894
- Anolis callainus KÖHLER & HEDGES, 2020
- Anolis carolinensis VOIGT, 1832
- Anolis chlorodius KÖHLER & HEDGES, 2016
- Anolis christophei WILLIAMS, 1960
- Anolis chrysolepis DUMÉRIL & BIBRON, 1837
- Anolis chrysops LAZELL, 1964
- Anolis conspersus GARMAN, 1887
- Anolis cristatellus DUMÉRIL & BIBRON, 1837
- Anolis cyanopleurus COPE, 1861
- Anolis cybotes COPE, 1863
- Anolis desiradei LAZELL, 1964
- Anolis distichus COPE, 1861
- Anolis doris BARBOUR, 1925
- Anolis equestris MERREM, 1820
- Anolis eugenegrahami SCHWARTZ, 1978
- Anolis evermanni STEJNEGER, 1904
- Anolis extremus GARMAN, 1887
- Anolis forresti BARBOUR, 1923
- Anolis frenatus COPE, 1899
- Anolis fuscoauratus D’ORBIGNY, 1837
- Anolis gadovii BOULENGER, 1905
- Anolis garmani STEJNEGER, 1899
- Anolis ginaelisae (LOTZKAT, HERTZ, BIENENTREU & KÖHLER, 2013)
- Anolis gingivinus COPE, 1864
- Anolis grahami GRAY, 1845
- Anolis griseus GARMAN, 1887
- Anolis gundlachi PETERS, 1877
- Anolis hendersoni COCHRAN, 1923
- Anolis heterodermus DUMÉRIL, 1851
- Anolis homolechis (COPE, 1864)
- Anolis humilis PETERS, 1863
- Anolis ibanezi POE, LATELLA, RYAN & SCHAAD, 2009
- Anolis insignis COPE, 1871
- Anolis kahouannensis LAZELL, 1964
- Anolis kunayalae HULEBAK, POE, IBÁÑEZ & WILLIAMS, 2007
- Anolis laeviventris (WIEGMANN, 1834)
- Anolis latifrons BERTHOLD, 1846
- Anolis leachii DUMÉRIL & BIBRON, 1837
- Anolis lemurinus COPE, 1861
- Anolis limifrons COPE, 1863
- Anolis lineatopus GRAY, 1840
- Anolis liogaster BOULENGER, 1905
- Anolis lividus GARMAN, 1887
- Anolis luciae GARMAN, 1887
- Anolis luteogularis NOBLE & HASSLER, 1935
- Anolis maculiventris BOULENGER, 1898
- Anolis magnaphallus POE & IBÁÑEZ, 2007
- Anolis marmoratus DUMÉRIL & BIBRON, 1837
- Anolis meridionalis BOETTGER, 1885
- Anolis mestrei BARBOUR & RAMSDEN, 1916
- Anolis monticola SHREVE, 1936
- Anolis naufragus (CAMPBELL, HILLIS & LAMAR, 1989)
- Anolis nebulosus (WIEGMANN, 1834)
- Anolis nemonteae AYALA-VARELA, VALVERDE, POE, NARVÁEZ, YÁNEZ-MUÑOZ & TORRES-CARVAJAL, 2021
- Anolis oculatus (COPE, 1879)
- Anolis oligaspis COPE, 1894
- Anolis olssoni SCHMIDT, 1919
- Anolis ortonii COPE, 1868
- Anolis oxylophus COPE, 1875
- Anolis peucephilus KÖHLER, TREJO-PÉREZ, PETERSEN, MENDEZ DE LA CRUZ, 2014
- Anolis poei AYALA-VARELA, TROYA-RODRIGUEZ, TALERO-RODRIGUEZ & TORRES-CARVAJAL, 2014
- Anolis polylepis PETERS, 1874
- Anolis porcatus GRAY, 1840
- Anolis pseudotigrinus AMARAL, 1933
- Anolis pulchellus DUMÉRIL & BIBRON, 1837
- Anolis punctatus DAUDIN, 1802
- Anolis quimbaya MORENO-ARIAS, MÉNDEZ-GALEANO, BELTRÁN & VARGAS-RAMÍREZ, 2023
- Anolis ravifaux SCHWARTZ & HENDERSON, 1982
- Anolis richardii DUMÉRIL & BIBRON, 1837
- Anolis roquet (BONNATERRE, 1789)
- Anolis rubribarbus BARBOUR & RAMSDEN, 1919
- Anolis rupinae WILLIAMS & WEBSTER, 1974
- Anolis sagrei DUMÉRIL & BIBRON, 1837
- Anolis saxatilis MERTENS, 1938
- Anolis schwartzi LAZELL, 1972
- Anolis stevepoei KÖHLER, TREJO-PÉREZ, PETERSEN & MÉNDEZ DE LA CRUZ, 2014
- Anolis stratulus COPE, 1861
- Anolis transversalis DUMÉRIL, 1851
- Anolis tropidolepis BOULENGER, 1885
- Anolis unilobatus KÖHLER & VESELY, 2010
- Anolis ustus COPE, 1864
- Anolis valencienni DUMÉRIL & BIBRON, 1837
- Anolis vermiculatus COCTEAU, 1837
- Anolis viridius KÖHLER & HEDGES, 2016
- Anolis wattsii BOULENGER, 1894
- Anomalopus verreauxii DUMÉRIL, 1851
- Anotosaura collaris AMARAL, 1933
- Anotosaura vanzolinia DIXON, 1974
- Antillotyphlops catapontus (THOMAS, 1966)
- Antillotyphlops monastus (THOMAS, 1966)
- Antillotyphlops naugus (THOMAS, 1966)
- Apalone ferox (SCHNEIDER, 1783)
- Apalone spinifera (LESUEUR, 1827)
- Aparallactus jacksonii (GÜNTHER, 1888)
- Aparallactus lunulatus (PETERS, 1854)
- Aphaniotis fusca (PETERS, 1864)
- Aplopeltura boa (BOIE, 1828)
- Apographon orestes (HARVEY & MUÑOZ, 2004)
- Apostolepis assimilis (REINHARDT, 1861)
- Apostolepis nigrolineata (PETERS, 1869)
- Apostolepis quinquelineata BOULENGER, 1896
- Aprasia parapulchella KLUGE, 1974
- Aprasia striolata LÜTKEN, 1863
- Archaeolacerta bedriagae (CAMERANO, 1885)
- Archelaphe bella (STANLEY, 1917)
- Argyrophis diardii (SCHLEGEL, 1839)
- Aristelliger lar COPE, 1862
- Arizona elegans KENNICOTT, 1859
- Arizona occidentalis BLANCHARD, 1924
- Arthrosaura kockii (LIDTH DE JEUDE, 1904)
- Arthrosaura reticulata (O'SHAUGHNESSY, 1881)
- Aspidelaps scutatus (SMITH, 1849)
- Aspidites melanocephalus (KREFFT, 1864)
- Aspidites ramsayi (MACLEAY, 1882)
- Aspidomorphus schlegelii (GÜNTHER, 1872)
- Aspidoscelis arizonae (VAN DENBURGH, 1896)
- Aspidoscelis costatus (COPE, 1878)
- Aspidoscelis inornatus (BAIRD, 1859)
- Aspidoscelis scalaris (COPE, 1892)
- Aspidoscelis sexlineatus (LINNAEUS, 1766)
- Aspidoscelis sonorae (LOWE & WRIGHT, 1964)
- Aspidoscelis tigris (BAIRD & GIRARD, 1852)
- Aspidoscelis uniparens (WRIGHT & LOWE, 1965)
- Aspidoscelis xanthonotus (DUELLMAN & LOWE, 1953)
- Aspronema dorsivittatum (COPE, 1862)
- Asthenodipsas borneensis QUAH, GRISMER, LIM, ANUAR & CHAN, 2020
- Asthenodipsas ingeri QUAH, LIM & GRISMER, 2021
- Asthenodipsas laevis (BOIE, 1827)
- Asthenodipsas lasgalenensis LOREDO, WOOD, QUAH, ANUAR, GREER, AHMAD & GRISMER, 2013
- Asthenodipsas tropidonotus (LIDTH DE JEUDE, 1923)
- Asthenodipsas vertebralis (BOULENGER, 1900)
- Astrochelys radiata (SHAW, 1802)
- Astrochelys yniphora (VAILLANT, 1885)
- Atheris anisolepis MOCQUARD, 1887
- Atheris broadleyi LAWSON, 1999
- Atheris chlorechis (PEL, 1852)
- Atheris nitschei TORNIER, 1902
- Atheris squamigera HALLOWELL, 1854
- Atlantolacerta andreanskyi (WERNER, 1929)
- Atractaspis aterrima GÜNTHER, 1863
- Atractaspis irregularis (REINHARDT, 1843)
- Atractaspis microlepidota GÜNTHER, 1866
- Atractus arangoi PRADO, 1940
- Atractus atlas PASSOS, SCANFERLA, MELO-SAMPAIO, BRITO & ALMENDARIZ, 2018
- Atractus attenuatus MYERS & SCHARGEL, 2006
- Atractus dapsilis MELO-SAMPAIO, PASSOS, FOUQUET, COSTA-PRUDENTE & TORRES-CARVAJAL, 2019
- Atractus dativus PASSOS, MENESES-PELAYO, RAMOS, MARTINS, MACHADO, LOPES, BARRIO-AMORÓS & LYNCH, 2024
- Atractus emmeli (BOETTGER, 1888)
- Atractus indistinctus PRADO, 1940
- Atractus major BOULENGER, 1894
- Atractus mariselae LANCINI, 1969
- Atractus marthae MENESES-PELAYO & PASSOS, 2019
- Atractus pamplonensis AMARAL, 1935
- Atractus pearti PASSOS, MENESES-PELAYO, RAMOS, MARTINS, MACHADO, LOPES, BARRIO-AMORÓS & LYNCH, 2024
- Atractus schach (BOIE, 1827)
- Atractus serranus AMARAL, 1930
- Atractus snethlageae CUNHA & NASCIMENTO, 1983
- Atractus torquatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Atractus trefauti MELO-SAMPAIO, PASSOS, FOUQUET, COSTA-PRUDENTE & TORRES-CARVAJAL, 2019
- Atractus trilineatus WAGLER, 1828
- Atractus tritono PASSOS, MENESES-PELAYO, RAMOS, MARTINS, MACHADO, LOPES, BARRIO-AMORÓS & LYNCH, 2024
- Atractus ukupacha MELO-SAMPAIO, PASSOS, PRUDENTE, VENEGAS & TORRES-CARVAJAL, 2021
- Atractus wagleri PRADO, 1945
- Atretium schistosum (DAUDIN, 1803)
- Aurivela longicauda (BELL, 1843)
- Austrelaps superbus (GÜNTHER, 1858)
- Austroablepharus naranjicaudus (GREER, FISHER & HORNER, 2004)
- Azemiops feae BOULENGER, 1888
- Bachia bresslaui (AMARAL, 1935)
- Bachia dorbignyi (DUMÉRIL & BIBRON, 1839)
- Bachia flavescens (BONNATERRE, 1789)
- Bachia guianensis HOOGMOED & DIXON, 1977
- Bachia heteropa (LICHTENSTEIN & MARTENS, 1856)
- Bachia huallagana DIXON, 1973
- Bachia intermedia NOBLE, 1921
- Bachia panoplia THOMAS, 1965
- Bachia peruana (WERNER, 1901)
- Bachia pyburni KIZIRIAN & MCDIARMID, 1998
- Bachia scaea TEIXEIRA, DAL VECHIO, SALES-NUNES, MOLLO-NETO, MOREIRA-LOBO, STORTI, JUNQUEIRA-GAIGA, FREIRE-DIAS & RODRIGUES, 2013
- Bachia scolecoides VANZOLINI, 1961
- Bachia trisanale (COPE, 1868)
- Barisia imbricata (WIEGMANN, 1828)
- Barkudia insularis ANNANDALE, 1917
- Basiliscus basiliscus (LINNAEUS, 1758)
- Basiliscus galeritus DUMÉRIL, 1851
- Basiliscus plumifrons COPE, 1875
- Basiliscus vittatus WIEGMANN, 1828
- Batagur affinis (CANTOR, 1847)
- Batagur baska (GRAY, 1831)
- Batagur borneoensis (SCHLEGEL & MÜLLER, 1844)
- Batagur dhongoka (GRAY, 1834)
- Bauerius ansorgii (BOULENGER, 1907)
- Bipes canaliculatus LATREILLE, 1801
- Bitis arietans (MERREM, 1820)
- Bitis caudalis (SMITH, 1839)
- Bitis gabonica (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Bitis nasicornis (SHAW & NODDER, 1792)
- Blanus aporus WERNER, 1898
- Blanus cinereus (VANDELLI, 1797)
- Blanus oxyurus WAGLER, 1824
- Blanus strauchi (BEDRIAGA, 1884)
- Boa constrictor LINNAEUS, 1758
- Boa imperator DAUDIN, 1803
- Boaedon angolensis (BOCAGE, 1895)
- Boaedon fuliginosus (BOIE, 1827)
- Boaedon lineatus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Boaedon mendesi CERÍACO, ARELLANO, JADIN, MARQUES, PARRINHA & HALLERMANN, 2021
- Boaedon perisilvestris TRAPE & MEDIANNIKOV, 2016
- Boaedon subflavus TRAPE & MEDIANNIKOV, 2016
- Boaedon variegatus (BOCAGE, 1867)
- Boiga dendrophila (BOIE, 1827)
- Boiga drapiezii (BOIE, 1827)
- Boiga forsteni (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Boiga gocool (GRAY, 1834)
- Boiga kraepelini STEJNEGER, 1902
- Boiga multifasciata (BLYTH, 1861)
- Boiga multomaculata (BOIE, 1827)
- Boiga nigriceps (GÜNTHER, 1863)
- Boiga trigonata (SCHNEIDER, 1802)
- Boiruna maculata (BOULENGER, 1896)
- Borikenophis portoricensis (REINHARDT & LÜTKEN, 1862)
- Bothriechis guifarroi TOWNSEND, MEDINA-FLORES, WILSON, JADIN & AUSTIN, 2013
- Bothriechis marchi (BARBOUR & LOVERIDGE, 1929)
- Bothriechis nigroadspersus (STEINDACHNER, 1870)
- Bothriechis nigroviridis PETERS, 1859
- Bothriechis nitidus (GÜNTHER, 1859)
- Bothriechis schlegelii (BERTHOLD, 1846)
- Bothriechis torvus (POSADA-ARANGO, 1889)
- Bothrochilus boa (SCHLEGEL, 1837)
- Bothrops alternatus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Bothrops asper (GARMAN, 1883)
- Bothrops atrox (LINNAEUS, 1758)
- Bothrops bilineatus (WIED-NEUWIED, 1821)
- Bothrops brazili HOGE, 1954
- Bothrops caribbaeus (GARMAN, 1887)
- Bothrops insularis (AMARAL, 1922)
- Bothrops jararaca (WIED-NEUWIED, 1824)
- Bothrops jararacussu LACERDA, 1884
- Bothrops leucurus WAGLER, 1824
- Bothrops moojeni HOGE, 1966
- Bothrops oligobalius DAL VECHIO, PRATES, GRAZZIOTIN, GRABOSKI & RODRIGUES, 2021
- Bothrops pirajai AMARAL, 1923
- Brachylophus bulabula FISHER, HARLOW, EDWARDS & KEOGH, 2008
- Brachylophus vitiensis GIBBONS, 1981
- Brachymeles gracilis (FISCHER, 1885)
- Brachymeles samad SILER, JONES, DIESMOS, DIESMOS & BROWN, 2012
- Brachyseps frontoparietalis (BOULENGER, 1889)
- Brachyseps punctatus (RAXWORTHY & NUSSBAUM, 1993)
- Bradypodion caffrum (BOETTGER, 1889)
- Bradypodion pumilum (GMELIN, 1789)
- Brasiliscincus heathi (SCHMIDT & INGER, 1951)
- Broadleysaurus major (DUMÉRIL, 1851)
- Bronchocela cristatella (KUHL, 1820)
- Bronchocela jubata DUMÉRIL & BIBRON, 1837
- Brookesia peyrierasi BRYGOO & DOMERGUE, 1974
- Bungarus bungaroides (CANTOR, 1839)
- Bungarus caeruleus (SCHNEIDER, 1801)
- Bungarus candidus (LINNAEUS, 1758)
- Bungarus ceylonicus GÜNTHER, 1864
- Bungarus fasciatus (SCHNEIDER, 1801)
- Bungarus flaviceps REINHARDT, 1843
- Bungarus lividus CANTOR, 1839
- Bungarus multicinctus BLYTH, 1861
- Bungarus niger WALL, 1908
- Bungarus sindanus BOULENGER, 1897
- Bungarus slowinskii KUCH, KIZIRIAN, NGUYEN, LAWSON, DONNELLY & MEBS, 2005
- Bungarus walli WALL, 1907
- Cachryx defensor COPE, 1866
- Caiman crocodilus (LINNAEUS, 1758)
- Caiman latirostris (DAUDIN, 1801)
- Caiman yacare (DAUDIN, 1801)
- Calamaria lumbricoidea BOIE, 1827
- Caledoniscincus austrocaledonicus (BAVAY, 1869)
- Caledoniscincus haplorhinus (GÜNTHER, 1872)
- Calliophis bivirgatus (BOIE, 1827)
- Calliophis intestinalis (LAURENTI, 1768)
- Calliophis nigrescens (GÜNTHER, 1862)
- Calliophis nigrotaeniatus PETERS, 1863
- Calliophis salitan BROWN, SMART, LEVITON & SMITH, 2018
- Callisaurus draconoides BLAINVILLE, 1835
- Callopistes maculatus GRAVENHORST, 1838
- Calloselasma rhodostoma (KUHL, 1824)
- Calotes bachae HARTMANN, GEISSLER, POYARKOV, IHLOW, GALOYAN, RÖDDER & BÖHME, 2013
- Calotes calotes (LINNAEUS, 1758)
- Calotes grandisquamis GÜNTHER, 1875
- Calotes mystaceus DUMÉRIL & BIBRON, 1837
- Calotes nemoricola JERDON, 1853
- Calotes versicolor (DAUDIN, 1802)
- Calotes zhaoermii WANG, SHU, LI, GUO & CHE, 2025
- Calumma capuroni (BRYGOO, BLANC & DOMERGUE, 1972)
- Calumma cucullatum (GRAY, 1831)
- Calumma juliae PRÖTZEL, VENCES, HAWLITSCHEK, SCHERZ, RATSOAVINA & GLAW, 2018
- Calumma radamanus (MERTENS, 1933)
- Calumma ratnasariae PRÖTZEL, SCHERZ, RATSOAVINA, VENCES & GLAW, 2020
- Calumma tjiasmantoi PRÖTZEL, SCHERZ, RATSOAVINA, VENCES & GLAW, 2020
- Calumma uetzi PRÖTZEL, VENCES, HAWLITSCHEK, SCHERZ, RATSOAVINA & GLAW, 2018
- Calyptommatus confusionibus RODRIGUES, ZAHER & CURCIO, 2001
- Calyptommatus leiolepis RODRIGUES, 1991
- Calyptommatus nicterus RODRIGUES, 1991
- Calyptommatus sinebrachiatus RODRIGUES, 1991
- Candoia bibroni (DUMÉRIL & BIBRON, 1844)
- Candoia carinata (SCHNEIDER, 1801)
- Candoia paulsoni (STULL, 1956)
- Caraiba andreae (REINHARDT & LÜTKEN, 1862)
- Caretta caretta (LINNAEUS, 1758)
- Carinascincus metallicus (O'SHAUGHNESSY, 1874)
- Carlia fusca (DUMÉRIL & BIBRON, 1839)
- Carphodactylus laevis GÜNTHER, 1897
- Causus defilippii (JAN, 1863)
- Causus maculatus (HALLOWELL, 1842)
- Causus rasmusseni BROADLEY, 2014
- Causus rhombeatus (LICHTENSTEIN, 1823)
- Celestus crusculus (GARMAN, 1887)
- Celestus striatus GRAY, 1839
- Cemophora coccinea (BLUMENBACH, 1788)
- Centrochelys sulcata (MILLER, 1779)
- Cerastes cerastes (LINNAEUS, 1758)
- Cerastes gasperettii LEVITON & ANDERSON, 1967
- Cerberus australis (GRAY, 1842)
- Cerberus schneiderii (SCHLEGEL, 1837)
- Cercosaura anordosquama STURARO, RODRIGUES, COLLI, KNOWLES & AVILA-PIRES, 2018
- Cercosaura argulus PETERS, 1862
- Cercosaura ocellata WAGLER, 1830
- Cercosaura olivacea (GRAY, 1845)
- Cercosaura oshaughnessyi (BOULENGER, 1885)
- Cercosaura schreibersii WIEGMANN, 1834
- Cerrophidion godmani (GÜNTHER, 1863)
- Cerrophidion petlalcalensis LÓPEZ-LUNA, VOGT & TORRE-LORANCA, 1999
- Chalarodon madagascariensis (PETERS, 1854)
- Chalcides bedriagai (BOSCA, 1880)
- Chalcides bottegi BOULENGER, 1898
- Chalcides chalcides (LINNAEUS, 1758)
- Chalcides ocellatus (FORSKÅL, 1775)
- Chalcides ragazzii BOULENGER, 1890
- Chalcides sepsoides (AUDOUIN, 1829)
- Chamaeleo africanus LAURENTI, 1768
- Chamaeleo chamaeleon (LINNAEUS, 1758)
- Chamaeleo dilepis LEACH, 1819
- Chamaeleo laevigatus GRAY, 1863
- Chamaeleo zeylanicus LAURENTI, 1768
- Chamaelycus fasciatus (GÜNTHER, 1858)
- Chatogekko amazonicus (ANDERSSON, 1918)
- Chelodina kuchlingi CANN, 1997
- Chelodina longicollis (SHAW, 1794)
- Chelodina mccordi RHODIN, 1994
- Chelodina rugosa OGILBY, 1889
- Chelonia mydas (LINNAEUS, 1758)
- Chelonoidis carbonarius (SPIX, 1824)
- Chelonoidis chilensis (GRAY, 1870)
- Chelonoidis denticulatus (LINNAEUS, 1766)
- Chelonoidis niger (QUOY & GAIMARD, 1824)
- Chelus fimbriata (SCHNEIDER, 1783)
- Chelus orinocensis VARGAS-RAMÍREZ, CABALLERO, MORALES-BETANCOURT, LASSO, AMAYA, MARTÎNEZ, SILVA-VIANA, VOGT, PIRES-FARIAS, HRBEK, CAMPBELL & FRITZ, 2020
- Chelydra serpentina (LINNAEUS, 1758)
- Chersina angulata (SCHWEIGGER, 1812)
- Chilabothrus chrysogaster (COPE, 1871)
- Chilorhinophis butleri WERNER, 1907
- Chironius bicarinatus (WIED-NEUWIED, 1820)
- Chironius carinatus (LINNAEUS, 1758)
- Chironius cochranae HOGE & ROMANO, 1969
- Chironius exoletus (LINNAEUS, 1758)
- Chironius flavolineatus (BOETTGER, 1885)
- Chironius fuscus (LINNAEUS, 1758)
- Chironius grandisquamis (PETERS, 1869)
- Chironius monticola ROZE, 1952
- Chironius multiventris SCHMIDT & WALKER, 1943
- Chironius quadricarinatus (BOIE, 1827)
- Chironius scurrula (WAGLER, 1824)
- Chitra chitra NUTAPHAND, 1986
- Chitra indica (GRAY, 1831)
- Chlorosoma viridissimum (LINNAEUS, 1758)
- Christinus marmoratus (GRAY, 1845)
- Chrysemys dorsalis AGASSIZ, 1857
- Chrysemys picta (SCHNEIDER, 1783)
- Chrysopelea ornata (SHAW, 1802)
- Clelia clelia (DAUDIN, 1803)
- Clelia plumbea (WIED-NEUWIED, 1820)
- Clemmys guttata (SCHNEIDER, 1792)
- Cnemaspis ajijae SAYYED, PYRON & DILEEPKUMAR, 2018
- Cnemaspis amboliensis SAYYED, PYRON & DILEEPKUMAR, 2018
- Cnemaspis anslemi KARUNARATHNA & UKUWELA, 2019
- Cnemaspis argus DRING, 1979
- Cnemaspis fantastica AGARWAL, THACKERAY & KHANDEKAR, 2022
- Cnemaspis flavolineata (NICHOLLS, 1949)
- Cnemaspis gracilis (BEDDOME, 1870)
- Cnemaspis harimau CHAN, GRISMER, ANUAR, QUAH, MUIN, SAVAGE, GRISMER, AHMAD, REMIGIO & GREER, 2010
- Cnemaspis indica GRAY, 1846
- Cnemaspis kalakadensis KHANDEKAR, THACKERAY & AGARWAL, 2022
- Cnemaspis kendallii (GRAY, 1845)
- Cnemaspis leucura KURITA, NISHIKAWA, MATSUI & HIKIDA, 2017
- Cnemaspis limayei SAYYED, PYRON & DILEEPKUMAR, 2018
- Cnemaspis mahabali SAYYED, PYRON & DILEEPKUMAR, 2018
- Cnemaspis monachorum GRISMER, AHMAD, CHAN, BELABUT, MUIN, WOOD & GRISMER, 2009
- Cnemaspis muria RIYANTO, MUNIR, MARTAMENGGALA, FITRIANA & HAMIDY, 2019
- Cnemaspis perhentianensis GRISMER & CHAN, 2008
- Cnemaspis pseudomcguirei GRISMER, AHMAD, CHAN, BELABUT, MUIN, WOOD & GRISMER, 2009
- Cnemaspis sakleshpurensis KHANDEKAR, THACKERAY & AGARWAL, 2022
- Cnemaspis tanintharyi LEE, MILLER, ZUG & MULCAHY, 2019
- Cnemidophorus gaigei RUTHVEN, 1915
- Cnemidophorus lemniscatus (LINNAEUS, 1758)
- Cnemidophorus ruatanus BARBOUR, 1928
- Coelognathus flavolineatus (SCHLEGEL, 1837)
- Coelognathus helena (DAUDIN, 1803)
- Coelognathus radiatus (BOIE, 1827)
- Coleodactylus meridionalis BOULENGER, 1888
- Colobosaura modesta (REINHARDT & LÜTKEN, 1862)
- Colobosauroides carvalhoi SOARES & CARAMASCHI, 1998
- Colobosauroides cearensis CUNHA, LIMA-VERDE & LIMA, 1991
- Coluber constrictor LINNAEUS, 1758
- Comptus stenurus (COPE, 1863)
- Concinnia tenuis (GRAY, 1831)
- Coniophanes fissidens (GÜNTHER, 1858)
- Coniophanes imperialis (BAIRD & GIRARD, 1859)
- Coniophanes lateritius COPE, 1862
- Coniophanes piceivittis COPE, 1870
- Coniophanes taeniata (PETERS, 1870)
- Conophis lineatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Conophis vittatus PETERS, 1860
- Conopsis biserialis (TAYLOR & SMITH, 1942)
- Conopsis nasus (GÜNTHER, 1858)
- Contomastix lacertoides (DUMÉRIL & BIBRON, 1839)
- Copeoglossum nigropunctatum (SPIX, 1825)
- Cophosaurus texanus TROSCHEL, 1852
- Corallus annulatus (COPE, 1875)
- Corallus batesii (GRAY, 1860)
- Corallus blombergi (RENDAHL & VESTERGREN, 1940)
- Corallus caninus (LINNAEUS, 1758)
- Corallus cookii GRAY, 1842
- Corallus cropanii (HOGE, 1953)
- Corallus grenadensis (BARBOUR, 1914)
- Corallus hortulana (LINNAEUS, 1758)
- Corallus ruschenbergerii (COPE, 1875)
- Cordylus rivae (BOULENGER, 1896)
- Coronella austriaca LAURENTI, 1768
- Coronella girondica (DAUDIN, 1803)
- Correlophus ciliatus GUICHENOT, 1866
- Corucia zebrata GRAY, 1855
- Corytophanes cristatus (MERREM, 1820)
- Corytophanes hernandesii (WIEGMANN, 1831)
- Craspedocephalus borneensis (PETERS, 1872)
- Craspedocephalus gramineus (SHAW, 1802)
- Craspedocephalus macrolepis (BEDDOME, 1862)
- Craspedocephalus puniceus (BOIE, 1827)
- Craspedocephalus strigatus (GRAY, 1842)
- Craspedocephalus trigonocephalus (DONNDORFF, 1798)
- Crenadactylus ocellatus (GRAY, 1845)
- Cricosaura typica GUNDLACH, 1863
- Crocodilurus amazonicus SPIX, 1825
- Crocodylus acutus CUVIER, 1807
- Crocodylus intermedius GRAVES, 1819
- Crocodylus mindorensis SCHMIDT, 1935
- Crocodylus moreletii DUMÉRIL & BIBRON, 1851
- Crocodylus niloticus LAURENTI, 1768
- Crocodylus palustris LESSON, 1831
- Crocodylus porosus SCHNEIDER, 1801
- Crossobamon eversmanni (WIEGMANN, 1834)
- Crotalus adamanteus PALISOT DE BEAUVOIS, 1799
- Crotalus aquilus KLAUBER, 1952
- Crotalus armstrongi CAMPBELL, 1979
- Crotalus atrox BAIRD & GIRARD, 1853
- Crotalus basiliscus (COPE, 1864)
- Crotalus brunneus HARRIS & SIMMONS, 1978
- Crotalus cerastes HALLOWELL, 1854
- Crotalus cerberus (COUES, 1875)
- Crotalus concolor WOODBURY, 1929
- Crotalus culminatus KLAUBER, 1952
- Crotalus durissus LINNAEUS, 1758
- Crotalus enyo (COPE, 1861)
- Crotalus estebanensis KLAUBER, 1949
- Crotalus exiguus CAMPBELL & ARMSTRONG, 1979
- Crotalus helleri MEEK, 1905
- Crotalus horridus LINNAEUS, 1758
- Crotalus lepidus (KENNICOTT, 1861)
- Crotalus lorenzoensis RADCLIFF & MASLIN, 1975
- Crotalus lutosus KLAUBER, 1930
- Crotalus mitchellii (COPE, 1861)
- Crotalus molossus BAIRD & GIRARD, 1853
- Crotalus oreganus HOLBROOK, 1840
- Crotalus polystictus (COPE, 1865)
- Crotalus pricei VAN DENBURGH, 1895
- Crotalus ravus COPE, 1865
- Crotalus ruber COPE, 1892
- Crotalus scutulatus (KENNICOTT, 1861)
- Crotalus simus LATREILLE, 1801
- Crotalus stejnegeri DUNN, 1919
- Crotalus tancitarensis ALVARADO-DÍAZ & CAMPBELL, 2004
- Crotalus tigris KENNICOTT, 1859
- Crotalus transversus TAYLOR, 1944
- Crotalus triseriatus (WAGLER, 1830)
- Crotalus viridis (RAFINESQUE, 1818)
- Crotalus willardi MEEK, 1905
- Crotaphopeltis degeni (BOULENGER, 1906)
- Crotaphopeltis hotamboeia (LAURENTI, 1768)
- Crotaphytus collaris (SAY, 1822)
- Crotaphytus reticulatus BAIRD, 1858
- Crotaphytus vestigium SMITH & TANNER, 1972
- Cryophis hallbergi BOGERT & DUELLMAN, 1963
- Cryptoblepharus australis (STERNFELD, 1918)
- Cryptoblepharus boutonii (DES JARDIN, 1831)
- Cryptoblepharus egeriae (BOULENGER, 1889)
- Cryptoblepharus gloriosus (STEJNEGER, 1893)
- Cryptoblepharus juno HORNER, 2007
- Cryptoblepharus keiensis (ROUX, 1910)
- Cryptoblepharus poecilopleurus (WIEGMANN, 1836)
- Cryptoblepharus pulcher (STERNFELD, 1918)
- Ctenophorus clayi (STORR, 1967)
- Ctenophorus decresii (DUMÉRIL & BIBRON, 1837)
- Ctenophorus dualis (STORR, 1965)
- Ctenophorus maculatus (GRAY, 1831)
- Ctenosaura acanthura (SHAW, 1802)
- Ctenosaura hemilopha (COPE, 1863)
- Ctenosaura nolascensis SMITH, 1972
- Ctenosaura pectinata (WIEGMANN, 1834)
- Ctenosaura similis (GRAY, 1831)
- Ctenotus brooksi (LOVERIDGE, 1933)
- Ctenotus orientalis STORR, 1971
- Ctenotus taeniolatus (WHITE, 1790)
- Cuora amboinensis (DAUDIN, 1801)
- Cuora couro (SCHWEIGGER, 1812)
- Cuora cyclornata BLANCK, MCCORD & LE MINH, 2006
- Cuora galbinifrons BOURRET, 1939
- Cuora lineata (MCCORD & PHILIPPEN, 1998)
- Cuora pani SONG, 1984
- Cuora trifasciata (BELL, 1825)
- Cuora yunnanensis (BOULENGER, 1906)
- Cyclemys atripons IVERSON & MCCORD, 1997
- Cyclemys dentata (GRAY, 1831)
- Cyclemys enigmatica FRITZ, GUICKING, AUER, SOMMER, WINK & HUNDSDÖRFER, 2008
- Cyclemys fusca FRITZ, GUICKING, AUER, SOMMER, WINK & HUNDSDÖRFER, 2008
- Cyclemys gemeli FRITZ, GUICKING, AUER, SOMMER, WINK & HUNDSDÖRFER, 2008
- Cyclemys oldhamii GRAY, 1863
- Cycloderma frenatum PETERS, 1854
- Cyclura collei GRAY, 1845
- Cyclura cornuta (BONNATERRE, 1789)
- Cyclura cychlura (CUVIER, 1829)
- Cyclura nubila (GRAY, 1831)
- Cyclura stejnegeri BARBOUR & NOBLE, 1916
- Cylindrophis ruffus (LAURENTI, 1768)
- Cynisca haugi (MOCQUARD, 1904)
- Cyrtodactylus aaronbaueri PURKAYASTHA, LALREMSANGA, BOHRA, BIAKZUALA, DECEMSON, MUANSANGA, VABEIRYUREILAI & RATHEE, 2021
- Cyrtodactylus arnei DO, NGO, NGUYEN, LE, ZIEGLER, DO, & PHAM, 2025
- Cyrtodactylus bapme KAMEI & MAHONY, 2021
- Cyrtodactylus batik ISKANDAR, RACHMANSAH & UMILAELA, 2011
- Cyrtodactylus bugiamapensis NAZAROV, POYARKOV, ORLOV, PHUNG, NGUYEN, HOANG & ZIEGLER, 2012
- Cyrtodactylus caovansungi ORLOV, QUANG TRUONG, NAZAROV, ANANJEVA & NGOC SANG, 2007
- Cyrtodactylus cayuensis LI, 2007
- Cyrtodactylus celatus KATHRINER, BAUER, O’SHEA, SANCHEZ & KAISER, 2014
- Cyrtodactylus consobrinus (PETERS, 1871)
- Cyrtodactylus dati NGO VAN TRI, 2013
- Cyrtodactylus denticulatus CHOMDEJ, SUWANNAPOOM, PRADIT, PHUPANBAI & GRISMER, 2023
- Cyrtodactylus elok DRING, 1979
- Cyrtodactylus gansi BAUER, 2003
- Cyrtodactylus gialaiensis LUU, DUNG, NGUYEN, LE & ZIEGLER, 2017
- Cyrtodactylus gordongekkoi (DAS, 1994)
- Cyrtodactylus hinnamnoensis LUU, BONKOWSKI, NGUYEN, LE, SCHNEIDER, NGO & ZIEGLER, 2016
- Cyrtodactylus hitchi RIYANTO, KURNIATI & ENGILIS, 2016
- Cyrtodactylus ingeri HIKIDA, 1990
- Cyrtodactylus intermedius (SMITH, 1917)
- Cyrtodactylus lomyenensis NGO VAN TRI & PAUWELS, 2010
- Cyrtodactylus malayanus (DE ROOIJ, 1915)
- Cyrtodactylus marmoratus GRAY, 1831
- Cyrtodactylus nebulosus (BEDDOME, 1870)
- Cyrtodactylus phuocbinhensis NGUYEN, LE, TRAN, ORLOV, LATHROP, MACCULLOCH, LE, JIN, NGUYEN, NGUYEN, HOANG, CHE, MURPHY & ZHANG, 2013
- Cyrtodactylus pubisulcus INGER, 1958
- Cyrtodactylus quadrivirgatus TAYLOR, 1962
- Cyrtodactylus rishivalleyensis AGARWAL, 2016
- Cyrtodactylus rukhadeva GRISMER, SUWANNAPOOM, PAWANGKHANANT, NAZAROV, YUSHCHENKO, NAIDUANGCHAN, LE, LUU & POYARKOV, 2021
- Cyrtodactylus russelli BAUER, 2003
- Cyrtodactylus septimontium MURDOCH, GRISMER, WOOD, NEANG, POYARKOV, TRI, NAZAROV, AOWPHOL, PAUWELS, NGUYEN & GRISMER, 2019
- Cyrtodactylus sommerladi LUU, BONKOWSKI, NGUYEN, LE, SCHNEIDER, NGO & ZIEGLER, 2016
- Cyrtodactylus speciosus (BEDDOME, 1870)
- Cyrtodactylus stresemanni RÖSLER & GLAW, 2008
- Cyrtodactylus tautbatorum WELTON, SILER, DIESMOS & BROWN, 2009
- Cyrtodactylus tayhoaensis DO, DO, NGO, ZIEGLER, NGO, NGUYEN & PHAM, 2023
- Cyrtodactylus yoshii HIKIDA, 1990
- Cyrtopodion kachhense (STOLICZKA, 1872)
- Cyrtopodion scabrum (HEYDEN, 1827)
- Cyrtopodion watsoni (MURRAY, 1892)
- Daboia mauritanica (GRAY, 1849)
- Daboia palaestinae (WERNER, 1938)
- Daboia russelii (SHAW & NODDER, 1797)
- Daboia siamensis (SMITH, 1917)
- Darevskia armeniaca (MÉHELY, 1909)
- Darevskia derjugini (NIKOLSKY, 1898)
- Darevskia kamii AHMADZADEH, FLECKS, CARRETERO, MOZAFFARI, BÖHME, HARRIS, FREITAS & RÖDDER, 2013
- Darevskia nairensis (DAREVSKY, 1967)
- Darevskia praticola (EVERSMANN, 1834)
- Darevskia raddei (BOETTGER, 1892)
- Darevskia steineri (EISELT, 1995)
- Dasia grisea (GRAY, 1845)
- Dasia haliana (NEVILL, 1887)
- Dasia nicobarensis BISWAS & SANYAL, 1977
- Dasia olivacea GRAY, 1839
- Dasia subcaerulea (BOULENGER, 1891)
- Dasypeltis atra STERNFELD, 1912
- Dasypeltis fasciata SMITH, 1849
- Dasypeltis scabra (LINNAEUS, 1758)
- Deinagkistrodon acutus (GÜNTHER, 1888)
- Deirochelys reticularia (LATREILLE, 1801)
- Delma inornata KLUGE, 1974
- Delma molleri LÜTKEN, 1863
- Delma plebeia DE VIS, 1888
- Delma tincta DE VIS, 1888
- Demansia angusticeps (MACLEAY, 1888)
- Demansia olivacea (GRAY, 1842)
- Demansia psammophis (SCHLEGEL, 1837)
- Demansia reticulata (GRAY, 1842)
- Dendragama boulengeri DORIA, 1888
- Dendrelaphis ashoki VOGEL & VAN ROOIJEN, 2011
- Dendrelaphis calligaster (GÜNTHER, 1867)
- Dendrelaphis caudolineatus (GRAY, 1834)
- Dendrelaphis effrenis (WERNER, 1909)
- Dendrelaphis flavescens GAULKE, 1994
- Dendrelaphis keiensis (MERTENS, 1926)
- Dendrelaphis levitoni VAN ROOIJEN & VOGEL, 2012
- Dendrelaphis luzonensis LEVITON, 1961
- Dendrelaphis modestus BOULENGER, 1894
- Dendrelaphis ngansonensis (BOURRET, 1935)
- Dendrelaphis philippinensis (GÜNTHER, 1879)
- Dendrelaphis pictus (GMELIN, 1789)
- Dendrelaphis tristis (DAUDIN, 1803)
- Dendroaspis angusticeps (SMITH, 1849)
- Dendroaspis jamesoni (TRAILL, 1843)
- Dendroaspis polylepis GÜNTHER, 1864
- Dendroaspis viridis (HALLOWELL, 1844)
- Dendrophidion dendrophis (SCHLEGEL, 1837)
- Dendrophidion nuchale (PETERS, 1863)
- Dendrophidion percarinatum (COPE, 1893)
- Dendrosauridion yanesha LEHR, MORAVEC, LUNDBERG, KÖHLER, CATENAZZI & ŠMÍD, 2019
- Dermochelys coriacea (VANDELLI, 1761)
- Diadophis punctatus (LINNAEUS, 1766)
- Dibernardia affinis (GÜNTHER, 1858)
- Dicrodon heterolepis (TSCHUDI, 1845)
- Dicrodon holmbergi SCHMIDT, 1957
- Dierogekko koniambo BAUER, JACKMAN, SADLIER & WHITAKER, 2006
- Diplodactylus bilybara COUPER, PEPPER & OLIVER, 2014
- Diplodactylus furcosus PETERS, 1863
- Diplodactylus vittatus GRAY, 1832
- Diploderma polygonatum HALLOWELL, 1861
- Diploderma swinhonis (GÜNTHER, 1864)
- Diploglossus fasciatus (GRAY, 1831)
- Diplolaemus bibronii BELL, 1843
- Diplolaemus darwinii BELL, 1843
- Diplolaemus leopardinus (WERNER, 1898)
- Diplolaemus sexcinctus CEI, SCOLARO & VIDELA, 2003
- Diporiphora bilineata GRAY, 1842
- Diporiphora nobbi (WITTEN, 1972)
- Diporiphora vescus DOUGHTY, KEALLEY & MELVILLE, 2012
- Dipsadoboa aulica (GÜNTHER, 1864)
- Dipsadoboa riparia TRAPE, MEDIANNIKOV & BALDÉ, 2023
- Dipsadoboa underwoodi RASMUSSEN, 1993
- Dipsadoboa unicolor GÜNTHER, 1858
- Dipsadoboa viridis (PETERS, 1869)
- Dipsadoboa weileri (LINDHOLM, 1905)
- Dipsas andiana (BOULENGER, 1896)
- Dipsas catesbyi (SENTZEN, 1796)
- Dipsas copei (GÜNTHER, 1872)
- Dipsas elegans (BOULENGER, 1896)
- Dipsas gaigeae (OLIVER, 1937)
- Dipsas indica LAURENTI, 1768
- Dipsas klebbai ARTEAGA, SALAZAR-VALENZUELA, MEBERT, PEÑAFIEL, AGUIAR, SÁNCHEZ-NIVICELA, PYRON, COLSTON, CISNEROS-HEREDIA, YÁNEZ-MUÑOZ, VENEGAS, GUAYASAMIN & TORRES-CARVAJAL, 2018
- Dipsas mikanii SCHLEGEL, 1837
- Dipsas neuwiedi (IHERING, 1911)
- Dipsas sazimai FERNANDES, MARQUES & ARGÔLO, 2010
- Dipsas vagrans (DUNN, 1923)
- Dipsas vagus (JAN, 1863)
- Dipsas variegata (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Dispholidus typus (SMITH, 1828)
- Dogania subplana (GEOFFROY SAINT-HILAIRE, 1809)
- Dolichophis caspius (GMELIN, 1789)
- Dolichophis jugularis (LINNAEUS, 1758)
- Dracaena guianensis DAUDIN, 1801
- Draco beccarii PETERS & DORIA, 1878
- Draco bimaculatus GÜNTHER, 1864
- Draco cornutus GÜNTHER, 1864
- Draco cristatellus GÜNTHER, 1872
- Draco dussumieri DUMÉRIL & BIBRON, 1837
- Draco fimbriatus KUHL, 1820
- Draco formosus BOULENGER, 1900
- Draco haematopogon GRAY, 1831
- Draco hennigi MUSTERS, 1983
- Draco lineatus DAUDIN, 1802
- Draco maximus BOULENGER, 1893
- Draco melanopogon BOULENGER, 1887
- Draco obscurus BOULENGER, 1887
- Draco punctatus BOULENGER, 1900
- Draco quinquefasciatus HARDWICKE & GRAY, 1827
- Draco sumatranus SCHLEGEL, 1844
- Draco taeniopterus GÜNTHER, 1861
- Draco volans LINNAEUS, 1758
- Dravidogecko meghamalaiensis CHAITANYA, GIRI, DEEPAK, DATTA-ROY, MURTHY & KARANTH, 2019
- Dravidoseps tamilnaduensis AGARWAL, THACKERAY & KHANDEKAR, 2024
- Drepanoides anomalus (JAN, 1863)
- Dromicodryas bernieri (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Dryadosaura nordestina RODRIGUES, XAVIER FREIRE, MACHADO-PELLEGRINO & SITES, 2005
- Drymarchon corais (BOIE, 1827)
- Drymarchon couperi (HOLBROOK, 1842)
- Drymarchon margaritae ROZE, 1959
- Drymarchon melanurus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Drymobius chloroticus (COPE, 1886)
- Drymobius margaritiferus (SCHLEGEL, 1837)
- Drymoluber dichrous (PETERS, 1863)
- Dryophylax chimanta (ROZE, 1958)
- Dryophylax duida (MYERS & DONNELLY, 1996)
- Dryophylax nattereri (MIKAN, 1820)
- Dryophylax phoenix (FRANCO, TREVINE, MONTINGELLI & ZAHER, 2017)
- Dryophylax yavi (MYERS & DONNELLY, 1996)
- Duberria atriventris (STERNFELD, 1912)
- Duberria lutrix (LINNAEUS, 1758)
- Ebenavia boettgeri BOULENGER, 1885
- Ebenavia safari HAWLITSCHEK, SCHERZ, RUTHENSTEINER, CROTTINI & GLAW, 2018
- Ebenavia tuelinae HAWLITSCHEK, SCHERZ, RUTHENSTEINER, CROTTINI & GLAW, 2018
- Echinanthera cyanopleura (COPE, 1885)
- Echinosaura centralis DUNN, 1944
- Echinosaura horrida BOULENGER, 1890
- Echinosaura keyi (FRITTS & SMITH, 1969)
- Echis carinatus (SCHNEIDER, 1801)
- Echis leucogaster ROMAN, 1972
- Echis pyramidum (GEOFFROY SAINT-HILAIRE, 1827)
- Ecpleopus gaudichaudii DUMÉRIL & BIBRON, 1839
- Egernia cunninghami (GRAY, 1832)
- Egernia striolata (PETERS, 1870)
- Eirenis persicus (ANDERSON, 1872)
- Elaphe anomala (BOULENGER, 1916)
- Elaphe bimaculata SCHMIDT, 1925
- Elaphe climacophora (BOIE, 1826)
- Elaphe dione (PALLAS, 1773)
- Elaphe quatuorlineata (LACÉPÈDE, 1789)
- Elaphe sauromates (PALLAS, 1811)
- Elaphe schrenckii STRAUCH, 1873
- Elaphe taeniura COPE, 1861
- Elapomorphus quinquelineatus (RADDI, 1820)
- Elapomorphus wuchereri GÜNTHER, 1861
- Elapsoidea trapei MANÉ, 1999
- Elgaria kingii GRAY, 1838
- Elseya albagula THOMSON, GEORGES & LIMPUS, 2006
- Elseya irwini CANN, 1997
- Elseya novaeguineae (MEYER, 1874)
- Elseya rhodini THOMSON, AMEPOU, ANAMIATO & GEORGES, 2015
- Elseya schultzei (VOGT, 1911)
- Emoia aneityumensis MEDWAY, 1974
- Emoia atrocostata (LESSON, 1829)
- Emoia cyanogaster (LESSON, 1829)
- Emoia cyanura (LESSON, 1829)
- Emoia erronan BROWN, 1991
- Emoia impar (WERNER, 1898)
- Emoia nativitatis (BOULENGER, 1887)
- Emoia nigra (JACQUINOT & GUICHENOT, 1853)
- Emoia nigromarginata (ROUX, 1913)
- Emoia samoensis (DUMÉRIL, 1851)
- Emoia sanfordi SCHMIDT & BURT, 1930
- Emoia submetallica (MACLEAY, 1877)
- Emoia trossula BROWN & GIBBONS, 1986
- Emydoidea blandingii (HOLBROOK, 1838)
- Emydura macquarii (GRAY, 1830)
- Emys orbicularis (LINNAEUS, 1758)
- Emys trinacris FRITZ, FATTIZZO, GUICKING, TRIPEPI, PENNISI, LENK, JOGER & WINK, 2005
- Enhydris enhydris (SCHNEIDER, 1799)
- Enyalioides anisolepis TORRES-CARVAJAL, VENEGAS & DE QUEIROZ, 2015
- Enyalius bibronii BOULENGER, 1885
- Enyalius bilineatus (DUMÉRIL & BIBRON, 1837)
- Enyalius boulengeri ETHERIDGE, 1969
- Enyalius catenatus (WIED-NEUWIED, 1821)
- Enyalius erythroceneus RODRIGUES, DE FREITAS, SANTOS SILVA & VIÑA BERTOLOTTO, 2006
- Enyalius perditus JACKSON, 1978
- Enyalius pictus (SCHINZ, 1822)
- Epicrates alvarezi ABALOS, BAEZ & NADER, 1964
- Epicrates assisi MACHADO, 1944
- Epicrates cenchria (LINNAEUS, 1758)
- Epicrates crassus COPE, 1862
- Epictia albifrons (WAGLER, 1824)
- Epictia munoai (OREJAS-MIRANDA, 1961)
- Epictia signata (JAN, 1861)
- Epictia tenella (KLAUBER, 1939)
- Eremias arguta (PALLAS, 1773)
- Eremias grammica (LICHTENSTEIN, 1823)
- Eremias nigrocellata NIKOLSKY, 1896
- Eremias nikolskii BEDRIAGA, 1905
- Eremias scripta (STRAUCH, 1867)
- Eremias szczerbaki EREMCHENKO, PANFILOV & ZARINENKO, 1992
- Eremias velox (PALLAS, 1771)
- Eremias yarkandensis BLANFORD, 1875
- Eremiascincus fasciolatus (GÜNTHER, 1867)
- Eremiascincus richardsonii (GRAY, 1845)
- Eretmochelys imbricata (LINNAEUS, 1766)
- Eroticoscincus graciloides (LÖNNBERG & ANDERSSON, 1913)
- Erpeton tentaculatum LACÉPÈDE, 1800
- Erythrolamprus aesculapii (LINNAEUS, 1758)
- Erythrolamprus almadensis (WAGLER, 1824)
- Erythrolamprus cobella (LINNAEUS, 1758)
- Erythrolamprus jaegeri (GÜNTHER, 1858)
- Erythrolamprus macrosomus (AMARAL, 1936)
- Erythrolamprus melanotus (SHAW, 1802)
- Erythrolamprus miliaris (LINNAEUS, 1758)
- Erythrolamprus mimus (COPE, 1868)
- Erythrolamprus ocellatus PETERS, 1869
- Erythrolamprus poecilogyrus (WIED-NEUWIED, 1824)
- Erythrolamprus pygmaeus (COPE, 1868)
- Erythrolamprus reginae (LINNAEUS, 1758)
- Erythrolamprus sagittifer (JAN, 1863)
- Erythrolamprus taeniogaster (JAN, 1863)
- Erythrolamprus typhlus (LINNAEUS, 1758)
- Erythrolamprus viridis (GÜNTHER, 1862)
- Eryx colubrinus (LINNAEUS, 1758)
- Eryx conicus (SCHNEIDER, 1801)
- Eryx elegans (GRAY, 1849)
- Eryx jaculus (LINNAEUS, 1758)
- Eryx johnii (RUSSELL, 1801)
- Eryx miliaris (PALLAS, 1773)
- Eryx vittatus CHERNOV, 1959
- Eublepharis hardwickii GRAY, 1827
- Eublepharis macularius (BLYTH, 1854)
- Eugongylus albofasciolatus (GÜNTHER, 1872)
- Eugongylus rufescens (SHAW, 1802)
- Eulamprus quoyii (DUMÉRIL & BIBRON, 1839)
- Eumeces schneiderii (DAUDIN, 1802)
- Eumeces zarudnyi NIKOLSKY, 1900
- Eunectes murinus (LINNAEUS, 1758)
- Eunectes notaeus COPE, 1862
- Euprepiophis mandarinus (CANTOR, 1842)
- Eurolophosaurus amathites (RODRIGUES, 1984)
- Eurolophosaurus divaricatus (RODRIGUES, 1986)
- Eurydactylodes agricolae HENKEL & BÖHME, 2001
- Eurydactylodes vieillardi (BAVAY, 1869)
- Eutropis beddomei (JERDON, 1870)
- Eutropis bibronii (GRAY, 1839)
- Eutropis caraga BARLEY, DIESMOS, SILER, MARTINEZ & BROWN, 2020
- Eutropis carinata (SCHNEIDER, 1801)
- Eutropis clivicola (INGER, SHAFFER, KOSHY & BAKDE, 1984)
- Eutropis cuprea BARLEY, DIESMOS, SILER, MARTINEZ & BROWN, 2020
- Eutropis gubataas BARLEY, DIESMOS, SILER, MARTINEZ & BROWN, 2020
- Eutropis macularia (BLYTH, 1853)
- Eutropis multifasciata (KUHL, 1820)
- Eutropis rudis (BOULENGER, 1887)
- Eutropis rugifera (STOLICZKA, 1870)
- Eutropis sahulinghangganan BARLEY, DIESMOS, SILER, MARTINEZ & BROWN, 2020
- Eutropis trivittata (HARDWICKE & GRAY, 1827)
- Farancia abacura (HOLBROOK, 1836)
- Farancia erytrogramma (PALISOT DE BEAUVOIS, 1802)
- Feylinia currori GRAY, 1845
- Ficimia streckeri TAYLOR, 1931
- Flexiseps johannae (GÜNTHER, 1880)
- Fordonia leucobalia (SCHLEGEL, 1837)
- Fowlea flavipunctata (HALLOWELL, 1860)
- Fowlea melanzosta (GRAVENHORST, 1807)
- Fowlea piscator (SCHNEIDER, 1799)
- Fowlea yunnanensis (ANDERSON, 1879)
- Furcifer angeli (BRYGOO & DOMERGUE, 1968)
- Furcifer major (BRYGOO, 1971)
- Furcifer pardalis (CUVIER, 1829)
- Furcifer rhinoceratus (GRAY, 1845)
- Furcifer verrucosus (CUVIER, 1829)
- Furina diadema (SCHLEGEL, 1837)
- Gallotia intermedia BARBADILLO, LACOBA, PÉREZ-MELLADO, SANCHO & LÓPEZ-JURADO, 1999
- Gallotia simonyi (STEINDACHNER, 1889)
- Gambelia copeii (YARROW, 1882)
- Garthia gaudichaudii (DUMÉRIL & BIBRON, 1836)
- Gavialis gangeticus (GMELIN, 1789)
- Geckolepis maculata PETERS, 1880
- Geckolepis megalepis SCHERZ, DAZA, KÖHLER, VENCES & GLAW, 2017
- Gehyra australis GRAY, 1845
- Gehyra capensis KEALLEY, DOUGHTY, PEPPER, KEOGH, HILLYER & HUEY, 2018
- Gehyra chimera OLIVER, PRASETYA, TEDESCHI, FENKER, ELLIS, DOUGHTY & MORITZ, 2020
- Gehyra crypta KEALLEY, DOUGHTY, PEPPER, KEOGH, HILLYER & HUEY, 2018
- Gehyra einasleighensis BOURKE, PRATT, VANDERDUYS & MORITZ, 2017
- Gehyra finipunctata DOUGHTY, BAUER, PEPPER, KEOGH & ELLIS, 2018
- Gehyra gemina OLIVER, PRASETYA, TEDESCHI, FENKER, ELLIS, DOUGHTY & MORITZ, 2020
- Gehyra girloorloo OLIVER, BOURKE, PRATT, DOUGHTY & MORITZ, 2016
- Gehyra granulum DOUGHTY, PALMER, BOURKE, TEDESCHI, OLIVER & MORITZ, 2018
- Gehyra moritzi HUTCHINSON, SISTROM, DONNELLAN & HUTCHINSON, 2014
- Gehyra mutilata (WIEGMANN, 1834)
- Gehyra nana STORR, 1978
- Gehyra oceanica (LESSON, 1829)
- Gehyra variegata (DUMÉRIL & BIBRON, 1836)
- Gehyra vorax GIRARD, 1858
- Gekko albofasciolatus (GÜNTHER, 1867)
- Gekko albomaculatus (GIEBEL, 1861)
- Gekko cicakterbang (GRISMER, WOOD, GRISMER, QUAH, THY, PHIMMACHAK, SIVONGXAY, SEATEUN, STUART, SILER, MULCAHY, ANAMZA & BROWN, 2019)
- Gekko coi BROWN, SILER, OLIVEROS, DIESMOS & ALCALA, 2011
- Gekko crombota BROWN, OLIVEROS, SILER & DIESMOS, 2008
- Gekko gecko (LINNAEUS, 1758)
- Gekko kabkaebin (GRISMER, WOOD, GRISMER, QUAH, THY, PHIMMACHAK, SIVONGXAY, SEATEUN, STUART, SILER, MULCAHY, ANAMZA & BROWN, 2019)
- Gekko kuhli (STEJNEGER, 1902)
- Gekko lionotum (ANNANDALE, 1905)
- Gekko monarchus (SCHLEGEL, 1836)
- Gekko reevesii (GRAY, 1831)
- Gekko rossi BROWN, OLIVEROS, SILER & DIESMOS, 2009
- Gekko smithii GRAY, 1842
- Gekko tokehos (GRISMER, WOOD, GRISMER, QUAH, THY, PHIMMACHAK, SIVONGXAY, SEATEUN, STUART, SILER, MULCAHY, ANAMZA & BROWN, 2019)
- Gekko verreauxi TYTLER, 1865
- Gekko vittatus HOUTTUYN, 1782
- Gelanesaurus cochranae (BURT & BURT, 1931)
- Gelanesaurus flavogularis (ALTAMIRANO-BENAVIDES, ZAHER, LOBO, GRAZZIOTIN, SALES-NUNES & RODRIGUES, 2013)
- Geoclemys hamiltonii (GRAY, 1831)
- Geoemyda spengleri (GMELIN, 1789)
- Geophis annuliferus (BOULENGER, 1894)
- Geophis brachycephalus (COPE, 1871)
- Geophis damiani WILSON, MCCRANIE & WILLIAMS, 1998
- Geophis downsi SAVAGE, 1981
- Geophis dubius (PETERS, 1861)
- Geophis dugesii BOCOURT, 1883
- Geophis godmani BOULENGER, 1894
- Geophis hoffmanni (PETERS, 1859)
- Geophis rhodogaster (COPE, 1868)
- Geophis rostralis (JAN, 1865)
- Geophis sartorii (COPE, 1863)
- Gerrhonotus infernalis BAIRD, 1859
- Gerrhonotus lazcanoi BANDA-LEAL, NEVÁREZ-DE LOS REYES, BRYSON, 2017
- Gerrhonotus liocephalus WIEGMANN, 1828
- Gerrhonotus ophiurus COPE, 1867
- Gerrhonotus parvus KNIGHT & SCUDDAY, 1985
- Gerrhopilus beddomii (BOULENGER, 1890)
- Gerrhopilus mirus (JAN, 1860)
- Gerrhopilus persephone KRAUS, 2017
- Gerrhosaurus flavigularis WIEGMANN, 1828
- Glaphyromorphus nigricaudis (MACLEAY, 1877)
- Glaucomastix cyanura (ARIAS, DE CARVALHO, RODRIGUES & ZAHER, 2011)
- Glaucomastix venetacauda (ARIAS, DE CARVALHO, RODRIGUES & ZAHER, 2011)
- Gloydius blomhoffii (BOIE, 1826)
- Gloydius chambensis KUTTALAM, SANTRA, OWENS, SELVAN, MUKHERJEE, GRAHAM, TOGRIDOU, BHARTI, SHI, SHANKER & MALHOTRA, 2022
- Gloydius himalayanus (GÜNTHER, 1864)
- Gloydius intermedius (STRAUCH, 1868)
- Gloydius rickmersi WAGNER, TIUTENKO, BORKIN & SIMONOV, 2015
- Gloydius shedaoensis (ZHAO, 1979)
- Gloydius ussuriensis (EMELIANOV, 1929)
- Glyptemys insculpta (LE CONTE, 1830)
- Gonatodes albogularis (DUMÉRIL & BIBRON, 1836)
- Gonatodes annularis BOULENGER, 1887
- Gonatodes chucuri MENESES-PELAYO & RAMÍREZ, 2020
- Gonatodes humeralis (GUICHENOT, 1855)
- Gonatodes ocellatus (GRAY, 1831)
- Gonatodes vittatus (LICHTENSTEIN & MARTENS, 1856)
- Gongylosoma baliodeira (BOIE, 1827)
- Gongylosoma calamaria (GÜNTHER, 1858)
- Goniurosaurus hainanensis BARBOUR, 1908
- Goniurosaurus huuliensis ORLOV, RYABOV, NGUYEN, NGUYEN & HO, 2008
- Goniurosaurus lichtenfelderi (MOCQUARD, 1897)
- Gonocephalus bornensis (SCHLEGEL, 1851)
- Gonocephalus chamaeleontinus (LAURENTI, 1768)
- Gonocephalus doriae PETERS, 1871
- Gonocephalus grandis (GRAY, 1845)
- Gonocephalus liogaster (GÜNTHER, 1872)
- Gonyosoma boulengeri (MOCQUARD, 1897)
- Gonyosoma frenatum (GRAY, 1853)
- Gonyosoma jansenii (BLEEKER, 1859)
- Gonyosoma margaritatum PETERS, 1871
- Gonyosoma prasinum (BLYTH, 1855)
- Gopherus agassizii (COOPER, 1861)
- Gopherus berlandieri (AGASSIZ, 1857)
- Gopherus flavomarginatus LEGLER, 1959
- Gopherus polyphemus (DAUDIN, 1801)
- Gracililima nyassae (GÜNTHER, 1888)
- Graptemys barbouri CARR & MARCHAND, 1942
- Graptemys ernsti LOVICH & MCCOY, 1992
- Graptemys geographica (LESUEUR, 1817)
- Graptemys oculifera (BAUR, 1890)
- Graptemys pseudogeographica (GRAY, 1831)
- Grayia ornata (BOCAGE, 1866)
- Grypotyphlops acutus (DUMÉRIL & BIBRON, 1844)
- Gyalopion quadrangulare (GÜNTHER, 1893)
- Gymnodactylus darwinii (GRAY, 1845)
- Gymnodactylus geckoides SPIX, 1825
- Gymnophthalmus lineatus (LINNAEUS, 1758)
- Gymnophthalmus pleii BOCOURT, 1881
- Gymnophthalmus speciosus (HALLOWELL, 1861)
- Gymnophthalmus underwoodi GRANT, 1958
- Hardella thurjii (GRAY, 1831)
- Hebius craspedogaster (BOULENGER, 1899)
- Hebius johannis (BOULENGER, 1908)
- Hebius maximus (MALNATE, 1962)
- Hebius metusia (INGER, ZHAO, SHAFFER & WU, 1990)
- Hebius modestus (GÜNTHER, 1875)
- Hebius nigriventer (WALL, 1925)
- Hebius parallelus (BOULENGER, 1890)
- Hebius popei (SCHMIDT, 1925)
- Hebius pryeri (BOULENGER, 1887)
- Hebius sarawacensis (GÜNTHER, 1872)
- Hebius sauteri (BOULENGER, 1909)
- Hebius venningi (WALL, 1910)
- Helicops angulatus (LINNAEUS, 1758)
- Helicops apiaka KAWASHITA-RIBEIRO, ÁVILA & MORAIS, 2013
- Helicops carinicaudus (WIED-NEUWIED, 1824)
- Helicops danieli AMARAL, 1938
- Helicops gomesi AMARAL, 1922
- Helicops hagmanni ROUX, 1910
- Helicops infrataeniatus JAN, 1865
- Helicops leopardinus (SCHLEGEL, 1837)
- Helicops modestus GÜNTHER, 1861
- Helicops nentur COSTA, SANTANA, LEAL, KOROIVA & GARCIA, 2016
- Helicops pastazae SHREVE, 1934
- Helicops petersi ROSSMAN, 1976
- Helicops polylepis GÜNTHER, 1861
- Helicops scalaris JAN, 1865
- Helicops tapajonicus DA FROTA, 2005
- Helicops trivittatus (GRAY, 1849)
- Helicops yacu ROSSMAN & DIXON, 1975
- Heliobolus lugubris (SMITH, 1838)
- Heliobolus neumanni (TORNIER, 1905)
- Heliobolus nitidus (GÜNTHER, 1872)
- Heliobolus spekii (GÜNTHER, 1872)
- Heloderma alvarezi BOGERT & MARTIN DEL CAMPO, 1956
- Heloderma charlesbogerti CAMPBELL & VANNINI, 1988
- Heloderma exasperatum BOGERT & MARTIN DEL CAMPO, 1956
- Heloderma horridum (WIEGMANN, 1829)
- Heloderma suspectum COPE, 1869
- Hemachatus haemachatus (BONNATERRE, 1790)
- Hemibungarus calligaster (WIEGMANN, 1835)
- Hemibungarus mcclungi TAYLOR, 1922
- Hemidactylus afarensis ŠMÍD, MAZUCH, NOVÁKOVÁ, MODRY, MALONZA, ABDIRAHMAN-ELMI, CARRANZA & MORAVEC, 2020
- Hemidactylus agrius VANZOLINI, 1978
- Hemidactylus angulatus HALLOWELL, 1854
- Hemidactylus awashensis ŠMÍD, MORAVEC, KRATOCHVIL, NASHER, MAZUCH, GVOŽDÍK & CARRANZA, 2015
- Hemidactylus brasilianus (AMARAL, 1935)
- Hemidactylus brookii GRAY, 1845
- Hemidactylus craspedotus MOCQUARD, 1890
- Hemidactylus fasciatus GRAY, 1842
- Hemidactylus flaviviridis RÜPPELL, 1835
- Hemidactylus frenatus DUMÉRIL & BIBRON, 1836
- Hemidactylus garnotii DUMÉRIL & BIBRON, 1836
- Hemidactylus giganteus STOLICZKA, 1871
- Hemidactylus isolepis BOULENGER, 1895
- Hemidactylus leschenaultii DUMÉRIL & BIBRON, 1836
- Hemidactylus mabouia (MOREAU DE JONNÈS, 1818)
- Hemidactylus mercatorius GRAY, 1842
- Hemidactylus montanus BUSAIS & JOGER, 2011
- Hemidactylus palaichthus KLUGE, 1969
- Hemidactylus parvimaculatus DERANIYAGALA, 1953
- Hemidactylus pauciporosus LANZA, 1978
- Hemidactylus platyurus (SCHNEIDER, 1797)
- Hemidactylus rishivalleyensis AGARWAL, THACKERAY & KHANDEKAR, 2020
- Hemidactylus robustus HEYDEN, 1827
- Hemidactylus treutleri MAHONY, 2009
- Hemidactylus turcicus (LINNAEUS, 1758)
- Hemidactylus vanam CHAITANYA, LAJMI & GIRI, 2018
- Hemidactylus whitakeri MIRZA, GOWANDE, PATIL, AMBEKAR & PATEL, 2018
- Hemidactylus yerburii ANDERSON, 1895
- Hemiergis decresiensis (CUVIER, 1829)
- Hemiergis peronii (GRAY, 1831)
- Hemiphyllodactylus jnana AGARWAL, KHANDEKAR, GIRI, RAMAKRISHNAN & KARANTH, 2019
- Hemiphyllodactylus simaoensis AGUNG, CHORNELIA, GRISMER, GRISMER, QUAH, LU, TOMLINSON & HUGHES, 2022
- Hemiphyllodactylus typus BLEEKER, 1860
- Hemirhagerrhis hildebrandtii (PETERS, 1878)
- Hemirhagerrhis kelleri BOETTGER, 1893
- Hemitheconyx taylori PARKER, 1930
- Hemorrhois algirus (JAN, 1863)
- Hemorrhois hippocrepis (LINNAEUS, 1758)
- Hemorrhois nummifer (REUSS, 1834)
- Hemorrhois ravergieri (MÉNÉTRIES, 1832)
- Heosemys grandis (GRAY, 1860)
- Heosemys spinosa (GRAY, 1831)
- Heremites auratus (LINNAEUS, 1758)
- Heremites vittatus (OLIVIER, 1804)
- Heterodactylus imbricatus SPIX, 1825
- Heterodon kennerlyi KENNICOTT, 1860
- Heterodon nasicus BAIRD & GIRARD, 1852
- Heterodon platirhinos LATREILLE, 1801
- Heterodon simus (LINNAEUS, 1766)
- Heteronotia binoei (GRAY, 1845)
- Hierophis viridiflavus (LACÉPÈDE, 1789)
- Holbrookia approximans BAIRD, 1859
- Holbrookia elegans BOCOURT, 1874
- Holbrookia lacerata COPE, 1880
- Holbrookia maculata GIRARD, 1851
- Holbrookia propinqua BAIRD & GIRARD, 1852
- Holcosus amphigrammus (SMITH & LAUFE, 1945)
- Holcosus festivus (LICHTENSTEIN & MARTENS, 1856)
- Holcosus gaigeae (SMITH & LAUFE, 1946)
- Holcosus hartwegi (SMITH, 1940)
- Holcosus parvus (BARBOUR & NOBLE, 1915)
- Holcosus pulcher (HALLOWELL, 1861)
- Holcosus septemlineatus (DUMÉRIL, 1851)
- Holcosus sinister (SMITH & LAUFE, 1946)
- Holcosus stuarti SMITH, 1940
- Holcosus thomasi (SMITH & LAUFE, 1946)
- Holcosus undulatus (WIEGMANN, 1834)
- Holodactylus africanus BOETTGER, 1893
- Homalopsis buccata (LINNAEUS, 1758)
- Homonota fasciata (DUMÉRIL & BIBRON, 1836)
- Homonota horrida (BURMEISTER, 1861)
- Homonota williamsii ÁVILA, PEREZ, MINOLI & MORANDO, 2012
- Homopholis fasciata (BOULENGER, 1890)
- Homopholis wahlbergii (SMITH, 1849)
- Homopus areolatus (THUNBERG, 1787)
- Homopus femoralis BOULENGER, 1888
- Hoplocephalus bungaroides (SCHLEGEL, 1837)
- Hoplocercus spinosus FITZINGER, 1843
- Hoplodactylus duvaucelii (DUMÉRIL & BIBRON, 1836)
- Hydromedusa maximiliani (MIKAN, 1825)
- Hydromedusa tectifera COPE, 1870
- Hydromorphus concolor PETERS, 1859
- Hydrophis fasciatus (SCHNEIDER, 1799)
- Hydrophis mamillaris (DAUDIN, 1803)
- Hydrophis ornatus (GRAY, 1842)
- Hydrophis platurus (LINNAEUS, 1766)
- Hydrosaurus amboinensis (SCHLOSSER, 1768)
- Hypnale hypnale (MERREM, 1820)
- Hypsiglena chlorophaea COPE, 1860
- Hypsiglena torquata (GÜNTHER, 1860)
- Hypsilurus godeffroyi (PETERS, 1867)
- Hypsilurus longi (MACLEAY, 1877)
- Hypsiscopus plumbeus (BOIE, 1827)
- Iberolacerta aurelioi (ARRIBAS, 1994)
- Iberolacerta cyreni (MÜLLER & HELLMICH, 1937)
- Iberolacerta monticola (BOULENGER, 1905)
- Ichnotropis bivittata BOCAGE, 1866
- Ichnotropis capensis (SMITH, 1838)
- Iguana iguana (LINNAEUS, 1758)
- Imantodes cenchoa (LINNAEUS, 1758)
- Imantodes chocoensis TORRES-CARVAJAL, YÁNEZ-MUÑOZ, QUIROLA, SMITH & ALMENDÁRIZ, 2012
- Imantodes gemmistratus (COPE, 1861)
- Imantodes inornatus (BOULENGER, 1896)
- Imantodes tenuissimus (COPE, 1867)
- Indotestudo elongata (BLYTH, 1854)
- Indotestudo forstenii (SCHLEGEL & MÜLLER, 1844)
- Indotyphlops albiceps (BOULENGER, 1898)
- Indotyphlops braminus (DAUDIN, 1803)
- Intellagama lesueurii (GRAY, 1831)
- Iphisa elegans GRAY, 1851
- Iphisa munduruku MELLO, RECODER, FOUQUET, RODRIGUES & NUNES, 2023
- Iphisa pellegrino MELLO, RECODER, FOUQUET, RODRIGUES & NUNES, 2023
- Isanophis boonsongi (TAYLOR & ELBEL, 1958)
- Ithycyphus goudoti (SCHLEGEL, 1837)
- Ithycyphus oursi DOMERGUE, 1986
- Kaestlea bilineata (GRAY, 1846)
- Kaestlea laterimaculata (BOULENGER, 1887)
- Kaestlea travancorica (BEDDOME, 1870)
- Kentropyx borckiana (PETERS, 1869)
- Kentropyx calcarata SPIX, 1825
- Kentropyx paulensis (BOETTGER, 1893)
- Kentropyx pelviceps (COPE, 1868)
- Kentropyx striata (DAUDIN, 1802)
- Kinixys belliana GRAY, 1831
- Kinixys lobatsiana (POWER, 1927)
- Kinixys natalensis HEWITT, 1935
- Kinixys nogueyi (LATASTE, 1886)
- Kinixys zombensis HEWITT, 1931
- Kinosternon acutum GRAY, 1831
- Kinosternon baurii (GARMAN, 1891)
- Kinosternon dunni SCHMIDT, 1947
- Kinosternon herrerai STEJNEGER, 1925
- Kinosternon hirtipes (WAGLER, 1830)
- Kinosternon leucostomum (DUMÉRIL, BIBRON & DUMÉRIL, 1851)
- Kinosternon scorpioides (LINNAEUS, 1766)
- Kinosternon sonoriense LE CONTE, 1854
- Kinosternon vogti LÓPEZ-LUNA, CUPUL-MAGAÑA, ESCOBEDO-GALVÁN, GONZÁLEZ-HERNÁNDEZ, CENTENERO-ALCALÁ, RANGEL-MENDOZA, RAMÍREZ-RAMÍREZ & CAZARES-HERNÁNDEZ, 2018
- Kinyongia oxyrhina (KLAVER & BÖHME, 1988)
- Kinyongia tolleyae HUGHES, KUSAMBA, BEHANGANA & GREENBAUM, 2017
- Kolekanos plumicaudus (HAACKE, 2008)
- Lacerta agilis LINNAEUS, 1758
- Lacerta bilineata DAUDIN, 1802
- Lacerta media LANTZ & CYRÉN, 1920
- Lacerta pamphylica SCHMIDTLER, 1975
- Lacerta schreiberi BEDRIAGA, 1878
- Lacerta strigata EICHWALD, 1831
- Lacerta trilineata BEDRIAGA, 1886
- Lacerta viridis (LAURENTI, 1768)
- Lacertaspis rohdei (MÜLLER, 1910)
- Lachesis muta (LINNAEUS, 1766)
- Lachesis rhombeata (WIED, 1824)
- Laemanctus longipes WIEGMANN, 1834
- Laemanctus serratus COPE, 1864
- Lamprolepis smaragdina (LESSON, 1829)
- Lampropeltis californiae (BLAINVILLE, 1835)
- Lampropeltis extenuata (BROWN, 1890)
- Lampropeltis knoblochi TAYLOR, 1940
- Lampropeltis mexicana (GARMAN, 1884)
- Lampropeltis polyzona COPE, 1860
- Lampropeltis splendida (BAIRD & GIRARD, 1853)
- Lampropeltis triangulum (LACÉPÈDE, 1789)
- Lampropholis delicata (DE VIS, 1888)
- Lampropholis guichenoti (DUMÉRIL & BIBRON, 1839)
- Langaha madagascariensis BONATERRE, 1790
- Lankascincus fallax (PETERS, 1860)
- Lankascincus taprobanensis (KELAART, 1854)
- Lankascincus taylori GREER, 1991
- Lanthanotus borneensis STEINDACHNER, 1878
- Latastia boscai BEDRIAGA, 1884
- Latastia caeruleopunctata PARKER, 1935
- Latastia doriai BEDRIAGA, 1884
- Latastia longicaudata (REUSS, 1834)
- Laticauda colubrina (SCHNEIDER, 1799)
- Laticauda laticaudata (LINNAEUS, 1758)
- Laudakia agrorensis (STOLICZKA, 1872)
- Laudakia cypriaca (DAAN, 1967)
- Laudakia nupta (DE FILIPPI, 1843)
- Laudakia stellio (LINNAEUS, 1758)
- Laudakia vulgaris (SONNINI & LATREILLE, 1802)
- Leiocephalus barahonensis SCHMIDT, 1921
- Leiocephalus carinatus GRAY, 1827
- Leiocephalus lunatus COCHRAN, 1934
- Leiocephalus personatus (COPE, 1863)
- Leiocephalus stictigaster SCHWARTZ, 1959
- Leioheterodon madagascariensis (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Leioheterodon modestus (GÜNTHER, 1863)
- Leiolepis belliana (HARDWICKE & GRAY, 1827)
- Leiolepis ocellata PETERS, 1971
- Leiopython albertisii (PETERS & DORIA, 1878)
- Leiopython fredparkeri SCHLEIP, 2008
- Leiosaurus bellii DUMÉRIL & BIBRON, 1837
- Leiosaurus paronae (PERACCA, 1897)
- Lepidoblepharis xanthostigma (NOBLE, 1916)
- Lepidochelys kempii GARMAN, 1880
- Lepidochelys olivacea (ESCHSCHOLTZ, 1829)
- Lepidodactylus aignanus KRAUS, 2019
- Lepidodactylus kwasnickae KRAUS, 2019
- Lepidodactylus lugubris (DUMÉRIL & BIBRON, 1836)
- Lepidophyma flavimaculatum DUMÉRIL, 1851
- Lepidophyma gaigeae MOSAUER, 1936
- Lepidophyma inagoi PALACIOS-AGUILAR, SANTOS-BIBIANO & FLORES-VILLELA, 2018
- Lepidophyma radula (SMITH, 1942)
- Lepidophyma smithii BOCOURT, 1876
- Lepidophyma sylvaticum TAYLOR, 1939
- Lepidophyma zongolicum GARCÍA-VÁZQUEZ, CANSECO-MARQUEZ & AGUILAR-LÓPEZ, 2010
- Leposoma baturitensis RODRIGUES & BORGES, 1997
- Leposoma scincoides SPIX, 1825
- Leposternon microcephalus WAGLER, 1824
- Leposternon polystegum (DUMÉRIL, 1851)
- Leposternon scutigerum (HEMPRICH, 1820)
- Leptodeira annulata (LINNAEUS, 1758)
- Leptodeira maculata (HALLOWELL, 1861)
- Leptodeira ornata (BOCOURT, 1884)
- Leptodeira pulchriceps DUELLMAN, 1958
- Leptodeira punctata (PETERS, 1866)
- Leptodeira septentrionalis (KENNICOTT, 1859)
- Leptodeira splendida GÜNTHER, 1885
- Leptodeira tarairiu COSTA, GRABOSKI, GRAZZIOTIN, ZAHER, RODRIGUES & PRUDENTE, 2022
- Leptomicrurus scutiventris (COPE, 1870)
- Leptophis ahaetulla (LINNAEUS, 1758)
- Leptophis bocourti BOULENGER, 1898
- Leptophis bolivianus OLIVER, 1942
- Leptophis dibernardoi ALBUQUERQUE, SANTOS, BORGES-NOJOSA & ÁVILA, 2022
- Leptophis diplotropis (GÜNTHER, 1872)
- Leptophis liocercus (WIED, 1824)
- Leptophis marginatus (COPE, 1862)
- Leptophis mexicanus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Leptophis nigromarginatus (GÜNTHER, 1866)
- Leptophis occidentalis (GÜNTHER, 1859)
- Leptophis praestans (COPE, 1868)
- Leptophis urostictus (PETERS, 1873)
- Lerista allochira KENDRICK, 1989
- Lerista bougainvillii (GRAY, 1839)
- Leucocephalon yuwonoi (MCCORD, IVERSON & BOEADI, 1995)
- Lialis burtonis GRAY, 1834
- Lichanura orcutti STEJNEGER, 1889
- Lichanura trivirgata COPE, 1861
- Limaformosa capensis (SMITH, 1847)
- Limaformosa chanleri (STEJNEGER, 1893)
- Liodytes alleni (GARMAN, 1874)
- Liodytes rigida (SAY, 1825)
- Liolaemus abaucan ETHERIDGE, 1993
- Liolaemus albiceps LOBO & LAURENT, 1995
- Liolaemus alticolor BARBOUR, 1909
- Liolaemus annectens BOULENGER, 1901
- Liolaemus anomalus KOSLOWSKY, 1896
- Liolaemus balagueri VILLEGAS-PAREDES, HUAMANÍ-VALDERRAMA, LUQUE-FERNÁNDEZ, GUTIÉRREZ, QUIRÓZ & ABDALA, 2020
- Liolaemus bibronii (BELL, 1843)
- Liolaemus boulengeri KOSLOWSKY, 1898
- Liolaemus chacabucoense NUÑEZ & SCOLARO, 2009
- Liolaemus chacoensis SHREVE, 1948
- Liolaemus chiliensis (LESSON, 1829)
- Liolaemus chillanensis MÜLLER & HELLMICH, 1932
- Liolaemus constanzae DONOSO-BARROS, 1961
- Liolaemus darwinii (BELL, 1843)
- Liolaemus ditadai CEI, 1983
- Liolaemus dorbignyi KOSLOWSKY, 1898
- Liolaemus elongatus KOSLOWSKY, 1896
- Liolaemus espinozai ABDALA, 2005
- Liolaemus gracilis (BELL, 1843)
- Liolaemus gravenhorstii (GRAY, 1845)
- Liolaemus irregularis LAURENT, 1986
- Liolaemus koslowskyi ETHERIDGE, 1993
- Liolaemus laurenti ETHERIDGE, 1992
- Liolaemus lineomaculatus BOULENGER, 1885
- Liolaemus lutzae MERTENS, 1938
- Liolaemus magellanicus (HOMBRON & JACQUINOT, 1853)
- Liolaemus melanogaster LAURENT, 1998
- Liolaemus monticola MÜLLER & HELLMICH, 1932
- Liolaemus nigroviridis MÜLLER & HELLMICH, 1932
- Liolaemus nitidus (WIEGMANN, 1834)
- Liolaemus olongasta ETHERIDGE, 1993
- Liolaemus pictus (DUMÉRIL & BIBRON, 1837)
- Liolaemus quilmes ETHERIDGE, 1993
- Liolaemus reichei (WERNER, 1907)
- Liolaemus scrocchii QUINTEROS, ABDALA & LOBO, 2008
- Liolaemus signifer (DUMÈRIL & BIBRON, 1837)
- Liolaemus tenuis (DUMÉRIL & BIBRON, 1837)
- Liolaemus uspallatensis MACOLA & CASTRO, 1982
- Liolaemus villaricensis MÜLLER & HELLMICH, 1932
- Liolaemus zapallarensis MÜLLER & HELLMICH, 1933
- Liophidium rhodogaster (SCHLEGEL, 1837)
- Liophidium torquatum (BOULENGER, 1888)
- Liophidium vaillanti (MOCQUARD, 1901)
- Liopholis aputja FARQUHAR, MULDER, RUSSELL, HAINES, RANGERS & CHAPPLE, 2024
- Liopholis slateri (STORR, 1968)
- Liopholis whitii (LACÉPÈDE, 1804)
- Liotyphlops ternetzii (BOULENGER, 1896)
- Lipinia microcerca (BOETTGER, 1901)
- Lipinia trivittata POYARKOV, GEISSLER, GORIN, DUNAYEV, HARTMANN & SUWANNAPOOM, 2019
- Lipinia vittigera (BOULENGER, 1894)
- Lissemys punctata (BONNATERRE, 1789)
- Lophognathus gilberti GRAY, 1842
- Lophosaurus dilophus (DUMÉRIL & BIBRON, 1837)
- Loxopholis guianense (RUIBAL, 1952)
- Loxopholis hexalepis (AYALA & HARRIS, 1982)
- Loxopholis parietalis (COPE, 1886)
- Loxopholis percarinatum (MÜLLER, 1923)
- Loxopholis rugiceps COPE, 1869
- Loxopholis southi (RUTHVEN & GAIGE, 1924)
- Lycodon albofuscus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Lycodon aulicus (LINNAEUS, 1758)
- Lycodon capucinus BOIE, 1827
- Lycodon effraenis CANTOR, 1847
- Lycodon fasciolatus (SHAW, 1802)
- Lycodon gammiei (BLANFORD, 1878)
- Lycodon hypsirhinoides (THEOBALD, 1868)
- Lycodon jara (SHAW, 1802)
- Lycodon striatus (SHAW, 1802)
- Lycodon subannulatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Lycodon subcinctus BOIE, 1827
- Lycodon tiwarii BISWAS & SANYAL, 1965
- Lycodon travancoricus (BEDDOME, 1870)
- Lycodon tristrigatus (GÜNTHER, 1858)
- Lycodonomorphus laevissimus (GÜNTHER, 1862)
- Lycodonomorphus rufulus (LICHTENSTEIN, 1823)
- Lycodryas cococola HAWLITSCHEK, NAGY & GLAW, 2012
- Lycodryas gaimardi (SCHLEGEL, 1837)
- Lycodryas maculatus (GÜNTHER, 1858)
- Lycophidion capense (SMITH, 1831)
- Lycophidion chirioi TRAPE, 2021
- Lycophidion depressirostre LAURENT, 1968
- Lycophidion jacksoni BOULENGER, 1893
- Lycophidion uzungwense LOVERIDGE, 1932
- Lygisaurus foliorum DE VIS, 1884
- Lygodactylus capensis (SMITH, 1849)
- Lygodactylus miops GÜNTHER, 1891
- Lygodactylus morii VENCES, MULTZSCH, ZEBE, GIPPNER, ANDREONE, CROTTINI, GLAW, KÖHLER, RAKOTOMANGA, RASAMISON & RASELIMANANA, 2024
- Lygodactylus picturatus (PETERS, 1870)
- Lygodactylus tolampyae (GRANDIDIER, 1872)
- Lygodactylus wetzeli (SMITH, MARTIN & SWAIN, 1977)
- Lygodactylus winki VENCES, MULTZSCH, GIPPNER, MIRALLES, CROTTINI, GEHRING, RAKOTOARISON, RATSOAVINA, GLAW & SCHERZ, 2022
- Lygophis anomalus (GÜNTHER, 1858)
- Lygosoma tabonorum HEITZ, DIESMOS, FREITAS, ELLSWORTH & GRISMER, 2016
- Lyriocephalus scutatus (LINNAEUS, 1758)
- Mabuya mabouya (BONNATERRE, 1789)
- Macrochelys temminckii (TROOST, 1835)
- Macroprotodon cucullatus (GEOFFROY SAINT-HILAIRE, 1827)
- Macrovipera lebetinus (LINNAEUS, 1758)
- Madagascarophis meridionalis DOMERGUE, 1987
- Madascincus ankodabensis (ANGEL, 1930)
- Madatyphlops arenarius (GRANDIDIER, 1872)
- Magdalenasaura adercum FANG, VÁSQUEZ-RESTREPO & DAZA, 2020
- Magdalenasaura leurosquama FANG, VÁSQUEZ-RESTREPO & DAZA, 2020
- Malaclemys terrapin (SCHOEPFF, 1793)
- Malacochersus tornieri (SIEBENROCK, 1903)
- Malayopython reticulatus (SCHNEIDER, 1801)
- Malpolon insignitus (GEOFFROY SAINT-HILAIRE, 1827)
- Malpolon moilensis (REUSS, 1834)
- Malpolon monspessulanus (HERMANN, 1804)
- Manouria emys (SCHLEGEL & MÜLLER, 1844)
- Marisora syntoma MCCRANIE, MATTHEWS & HEDGES, 2020
- Marisora unimarginata (COPE, 1863)
- Masticophis anthonyi (STEJNEGER, 1901)
- Masticophis aurigulus (COPE, 1861)
- Masticophis barbouri (VAN DENBURGH & SLEVIN, 1921)
- Masticophis bilineatus JAN, 1863
- Masticophis flagellum (SHAW, 1802)
- Masticophis fuliginosus (COPE, 1895)
- Masticophis lateralis (HALLOWELL, 1853)
- Masticophis lineatus BOCOURT, 1890
- Masticophis mentovarius (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Masticophis piceus (COPE, 1892)
- Masticophis schotti BAIRD & GIRARD, 1853
- Masticophis slevini LOWE & NORRIS, 1955
- Masticophis taeniatus (HALLOWELL, 1852)
- Mastigodryas boddaerti (SENTZEN, 1796)
- Mastigodryas bruesi (BARBOUR, 1914)
- Mastigodryas cliftoni (HARDY, 1964)
- Mastigodryas melanolomus (COPE, 1868)
- Mastigodryas moratoi MONTINGELLI & ZAHER, 2011
- Matoatoa brevipes (MOCQUARD, 1900)
- Mauremys annamensis (SIEBENROCK, 1903)
- Mauremys leprosa (SCHWEIGGER, 1812)
- Mauremys reevesii (GRAY, 1831)
- Mauremys rivulata (VALENCIENNES, 1833)
- Mauremys sinensis (GRAY, 1834)
- Mediodactylus kotschyi (STEINDACHNER, 1870)
- Mediodactylus russowii (STRAUCH, 1887)
- Mediodactylus sagittifer (NIKOLSKY, 1900)
- Medopheos edracanthus (BOCOURT, 1874)
- Mehelya stenophthalmus (MOCQUARD, 1887)
- Meizodon semiornatus (PETERS, 1854)
- Melanochelys tricarinata (BLYTH, 1856)
- Melanochelys trijuga (SCHWEIGGER, 1812)
- Melanophidium punctatum BEDDOME, 1871
- Melanoseps ater (GÜNTHER, 1873)
- Melanosuchus niger (SPIX, 1825)
- Menetia amaura STORR, 1978
- Menetia greyii GRAY, 1845
- Meroles anchietae (BOCAGE, 1867)
- Meroles knoxii (MILNE-EDWARDS, 1829)
- Meroles suborbitalis (PETERS, 1869)
- Mesalina bahaeldini SEGOLI, COHEN & WERNER, 2002
- Mesalina guttulata (LICHTENSTEIN, 1823)
- Mesalina martini (BOULENGER, 1897)
- Mesalina simoni (BOETTGER, 1881)
- Mesoclemmys gibba (SCHWEIGGER, 1812)
- Mesoclemmys nasuta (SCHWEIGGER, 1812)
- Mesoclemmys perplexa BOUR & ZAHER, 2005
- Mesoclemmys raniceps (GRAY, 1856)
- Mesoclemmys tuberculata (LUEDERWALDT, 1926)
- Mesoclemmys vanderhaegei (BOUR, 1973)
- Mesoclemmys wermuthi (MERTENS, 1969)
- Mesoclemmys zuliae (PRITCHARD & TREBBAU, 1984)
- Metlapilcoatlus mexicanus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Metlapilcoatlus nummifer (RÜPPELL, 1845)
- Micrablepharus maximiliani (REINHARDT & LÜTKEN, 1862)
- Microlophus arenarius (TSCHUDI, 1845)
- Microlophus atacamensis (DONOSO-BARROS, 1960)
- Microlophus occipitalis (PETERS, 1871)
- Microlophus peruvianus (LESSON, 1829)
- Microlophus tigris (TSCHUDI, 1845)
- Micruroides euryxanthus (KENNICOTT, 1860)
- Micrurus apiatus (JAN, 1858)
- Micrurus corallinus (MERREM, 1820)
- Micrurus diastema (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Micrurus distans KENNICOTT, 1860
- Micrurus frontalis (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Micrurus helleri SCHMIDT & SCHMIDT, 1925
- Micrurus hemprichii (JAN, 1858)
- Micrurus ibiboboca (MERREM, 1820)
- Micrurus lemniscatus (LINNAEUS, 1758)
- Micrurus michoacanensis DUGES, 1891
- Micrurus mipartitus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Micrurus nigrocinctus (GIRARD, 1854)
- Micrurus oliveri ROZE, 1967
- Micrurus ortoni (SCHMIDT, 1953)
- Micrurus pyrrhocryptus (COPE, 1862)
- Micrurus serranus HARVEY, APARICIO & GONZALEZ, 2003
- Micrurus silviae DI BERNARDO, BORGES-MARTINS & DA SILVA, 2007
- Micrurus spixii WAGLER, 1824
- Micrurus surinamensis (CUVIER, 1816)
- Micrurus tener (BAIRD & GIRARD, 1853)
- Micrurus tricolor HOGE, 1956
- Mimophis mahfalensis (GRANDIDIER, 1867)
- Mitophis leptepileptus (THOMAS, MCDIARMID & THOMPSON, 1985)
- Mixcoatlus melanurus (MÜLLER, 1924)
- Mochlus fernandi (BURTON, 1836)
- Mochlus sundevallii (SMITH, 1849)
- Mochlus vinciguerrae (PARKER, 1932)
- Mokopirirakau granulatus (GRAY, 1845)
- Monilesaurus acanthocephalus PAL, VIJAYAKUMAR, SHANKER, JAYARAJAN & DEEPAK, 2018
- Monilesaurus ellioti (GÜNTHER, 1864)
- Monilesaurus rouxii (DUMÉRIL & BIBRON, 1837)
- Monopeltis guentheri BOULENGER, 1885
- Monopeltis rhodesiana BROADLEY, GANS & VISSER, 1976
- Montivipera albizona (NILSON, ANDREN & FLÄRDH, 1990)
- Montivipera bulgardaghica (NILSON & ANDREN, 1985)
- Montivipera raddei (BOETTGER, 1890)
- Montivipera wagneri (NILSON & ANDRÉN, 1984)
- Montivipera xanthina (GRAY, 1849)
- Morelia bredli (GOW, 1981)
- Morelia carinata (SMITH, 1981)
- Morelia imbricata (SMITH, 1981)
- Morelia spilota (LACÉPÈDE, 1804)
- Morelia viridis (SCHLEGEL, 1872)
- Morethia boulengeri (OGILBY, 1890)
- Myriopholis erythraeus (SCORTECCI, 1929)
- Myriopholis longicauda (PETERS, 1854)
- Myriopholis macrorhyncha (JAN, 1860)
- Myriopholis nursii (ANDERSON, 1896)
- Myuchelys latisternum (GRAY, 1867)
- Nactus pelagicus (GIRARD, 1858)
- Naja annulata PETERS, 1876
- Naja atra CANTOR, 1842
- Naja haje (LINNAEUS, 1758)
- Naja kaouthia LESSON, 1831
- Naja melanoleuca HALLOWELL, 1857
- Naja mossambica PETERS, 1854
- Naja multifasciata (WERNER, 1902)
- Naja naja (LINNAEUS, 1758)
- Naja nigricollis REINHARDT, 1843
- Naja nubiae WÜSTER & BROADLEY, 2003
- Naja pallida BOULENGER, 1896
- Naja peroescobari CERÍACO, MARQUES, SCHMITZ & BAUER, 2017
- Naja sputatrix BOIE, 1827
- Naja sumatrana MÜLLER, 1887
- Natator depressus (GARMAN, 1880)
- Natriciteres olivacea (PETERS, 1854)
- Natrix helvetica (LACÉPÈDE, 1789)
- Natrix maura (LINNAEUS, 1758)
- Natrix natrix (LINNAEUS, 1758)
- Natrix tessellata (LAURENTI, 1768)
- Naultinus elegans GRAY, 1842
- Naultinus grayii BELL, 1843
- Naultinus manukanus (MCCANN, 1955)
- Naultinus punctatus GRAY, 1843
- Naultinus stellatus HUTTON, 1872
- Nerodia clarkii (BAIRD & GIRARD, 1853)
- Nerodia erythrogaster (FORSTER, 1771)
- Nerodia fasciata (LINNAEUS, 1766)
- Nerodia harteri (TRAPIDO, 1941)
- Nerodia rhombifer (HALLOWELL, 1852)
- Nerodia sipedon (LINNAEUS, 1758)
- Nerodia taxispilota (HOLBROOK, 1838)
- Neusticurus rudis BOULENGER, 1900
- Nilssonia gangetica (CUVIER, 1825)
- Nilssonia hurum (GRAY, 1831)
- Nilssonia leithii (GRAY, 1872)
- Nilssonia nigricans (ANDERSON, 1875)
- Ninia diademata BAIRD & GIRARD, 1853
- Ninia maculata (PETERS, 1861)
- Ninia pavimentata (BOCOURT, 1883)
- Ninia psephota (COPE, 1875)
- Ninia sebae (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Notechis scutatus (PETERS, 1861)
- Nothobachia ablephara RODRIGUES, 1984
- Notochelys platynota (GRAY, 1834)
- Notomabuya frenata (COPE, 1863)
- Notoscincus ornatus (BROOM, 1896)
- Oedodera marmorata BAUER, JACKMAN, SADLIER & WHITHAKER, 2006
- Oedura bella OLIVER & DOUGHTY, 2016
- Oedura luritja OLIVER & MCDONALD, 2016
- Oedura marmorata GRAY, 1842
- Oedura tryoni DE VIS, 1884
- Oligodon albocinctus (CANTOR, 1839)
- Oligodon arnensis (SHAW, 1802)
- Oligodon joynsoni (SMITH, 1917)
- Oligodon meyerinkii (STEINDACHNER, 1891)
- Oligodon octolineatus (SCHNEIDER, 1801)
- Oligodon purpurascens (SCHLEGEL, 1837)
- Oligodon taeniatus (GÜNTHER, 1861)
- Oligodon taeniolatus (JERDON, 1853)
- Oligosoma elium MELZER, BELL & PATTERSON, 2017
- Oligosoma grande (GRAY, 1845)
- Oligosoma kokowai MELZER, BELL & PATTERSON, 2017
- Oligosoma lineoocellatum (DUMÉRIL, 1851)
- Oligosoma maccanni (HARDY, 1977)
- Oligosoma oliveri (MCCANN, 1955)
- Oligosoma polychroma (PATTERSON & DAUGHERTY, 1990)
- Oligosoma repens CHAPPLE, BELL, CHAPPLE, MILLER, DAUGHERTY & PATTERSON, 2011
- Oligosoma striatum (BULLER, 1871)
- Oligosoma toka CHAPPLE, BELL, CHAPPLE, MILLER, DAUGHERTY & PATTERSON, 2011
- Opheodrys aestivus (LINNAEUS, 1766)
- Opheodrys carinatus GROBMAN, 1984
- Opheodrys vernalis (HARLAN, 1827)
- Ophiodes fragilis (RADDI, 1820)
- Ophiodes striatus (SPIX, 1824)
- Ophiomorus kardesi KORNILIOS, KUMLUTAS, LYMBERAKIS & ILGAZ, 2018
- Ophiomorus punctatissimus (BIBRON & BORY DE ST. VINCENT, 1833)
- Ophiophagus hannah (CANTOR, 1836)
- Ophisops elegans MÉNÉTRIES, 1832
- Ophisops jerdonii BLYTH, 1853
- Ophisops occidentalis (BOULENGER, 1887)
- Ophryacus smaragdinus GRÜNWALD, JONES, FRANZ-CHÁVEZ & AHUMADA-CARiLLO, 2015
- Opisthotropis alcalai BROWN & LEVITON, 1961
- Opisthotropis andersonii (BOULENGER, 1888)
- Opisthotropis atra GÜNTHER, 1872
- Opisthotropis cheni ZHAO, 1999
- Opisthotropis daovantieni ORLOV, DAREVSKY & MURPHY, 1998
- Opisthotropis durandi TEYNIÉ, LOTTIER, DAVID, NGUYEN & VOGEL, 2014
- Opisthotropis guangxiensis ZHAO, JIANG & HUANG, 1978
- Opisthotropis hungtai WANG, LYU, ZENG, LIN, YANG, NGUYEN, LE, ZIEGLER & WANG, 2020
- Opisthotropis jacobi ANGEL & BOURRET, 1933
- Opisthotropis kikuzatoi (OKADA & TAKARA, 1958)
- Opisthotropis kuatunensis POPE, 1928
- Opisthotropis lateralis BOULENGER, 1903
- Opisthotropis latouchii (BOULENGER, 1899)
- Opisthotropis laui YANG, SUNG & CHAN, 2013
- Opisthotropis maculosa STUART & CHUAYNKERN, 2007
- Opisthotropis maxwelli BOULENGER, 1914
- Opisthotropis rugosa (LIDTH DE JEUDE, 1890)
- Opisthotropis shenzhenensis WANG, GUO, LIU, LYU, WANG, LUO, SUN & ZHANG, 2017
- Opisthotropis spenceri SMITH, 1918
- Opisthotropis tamdaoensis ZIEGLER, DAVID & VU, 2008
- Opisthotropis typica (MOCQUARD, 1890)
- Oplurus cuvieri GRAY, 1831
- Oplurus quadrimaculatus DUMÉRIL & BIBRON, 1851
- Orlitia borneensis GRAY, 1873
- Ornithuroscincus noctua (LESSON, 1829)
- Otosaurus cumingii GRAY, 1845
- Ouroborus cataphractus (BOIE, 1828)
- Ovophis makazayazaya (TAKAHASHI, 1922)
- Ovophis monticola (GÜNTHER, 1864)
- Ovophis okinavensis (BOULENGER, 1892)
- Ovophis zayuensis (JIANG, 1977)
- Oxybelis aeneus (WAGLER, 1824)
- Oxybelis brevirostris (COPE, 1861)
- Oxybelis fulgidus (DAUDIN, 1803)
- Oxybelis rutherfordi JADIN, BLAIR, ORLOFSKE, JOWERS, RIVAS, VITT, RAY, SMITH & MURPHY, 2020
- Oxybelis wilsoni VILLA & MCCRANIE, 1995
- Oxyrhopus clathratus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Oxyrhopus guibei HOGE & ROMANO, 1977
- Oxyrhopus melanogenys (TSCHUDI, 1845)
- Oxyrhopus petolarius (LINNAEUS, 1758)
- Oxyrhopus rhombifer DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Oxyrhopus trigeminus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Oxyuranus scutellatus (PETERS, 1867)
- Pachydactylus carinatus BAUER, LAMB & BRANCH, 2006
- Paleosuchus palpebrosus (CUVIER, 1807)
- Paleosuchus trigonatus (SCHNEIDER, 1801)
- Panaspis cabindae (BOCAGE, 1866)
- Panaspis ericae MARQUES, PARRINHA, LOPES-LIMA, TIUTENKO, BAUER & CERÍACO, 2024
- Panaspis maculicollis JACOBSEN & BROADLEY, 2000
- Panaspis mocamedensis CERÍACO, HEINICKE, PARKER, MARQUES & BAUER, 2020
- Panaspis namibiana CERÍACO, BRANCH & BAUER, 2018
- Panaspis tsavoensis KILUNDA, CONRADIE, WASONGA, JIN, PENG, MURPHY, MALONZA & CHE, 2019
- Panaspis wahlbergii (SMITH, 1849)
- Pangshura tecta (GRAY, 1831)
- Pangshura tentoria (GRAY, 1834)
- Panolopus aenetergum SCHWARTZ & JACOBS, 1989
- Panolopus chalcorhabdus SCHWARTZ, 1964
- Panolopus costatus COPE, 1862
- Panolopus neiba SCHWARTZ, 1964
- Panolopus nesobous SCHWARTZ, 1964
- Panolopus oreistes SCHWARTZ, 1964
- Panolopus psychonothes SCHWARTZ, 1964
- Panolopus saonae SCHWARTZ, 1971
- Pantherophis alleghaniensis (HOLBROOK, 1836)
- Pantherophis emoryi (BAIRD & GIRARD, 1853)
- Pantherophis guttatus (LINNAEUS, 1766)
- Pantherophis obsoletus (SAY, 1823)
- Pantherophis quadrivittatus (HOLBROOK, 1836)
- Pantherophis slowinskii (BURBRINK, 2002)
- Pantherophis vulpinus (BAIRD & GIRARD, 1853)
- Paralaudakia erythrogaster (NIKOLSKY, 1896)
- Paralaudakia himalayana (STEINDACHNER, 1867)
- Paralaudakia lehmanni (NIKOLSKY, 1896)
- Paraphimophis rusticus (COPE, 1878)
- Pareas boulengeri (ANGEL, 1920)
- Pareas carinatus WAGLER, 1830
- Pareas iwasakii (MAKI, 1937)
- Paroedura fasciata GLAW, KÖHLER & VENCES, 2018
- Pedioplanis lineoocellata (DUMÉRIL & BIBRON, 1839)
- Pedioplanis undata (SMITH, 1838)
- Pelochelys cantorii GRAY, 1864
- Pelodiscus huangshanensis GONG, PENG, HUANG, LIN, HUANG, XU, YANG, & NIE, 2021
- Pelodiscus maackii (BRANDT, 1858)
- Pelodiscus parviformis TANG, 1997
- Pelodiscus sinensis (WIEGMANN, 1835)
- Pelodiscus variegatus FARKAS, ZIEGLER, PHAM, ONG & FRITZ, 2019
- Pelomedusa gehafie (RÜPPELL, 1835)
- Pelomedusa subrufa (BONNATERRE, 1789)
- Peltocephalus dumerilianus (SCHWEIGGER, 1812)
- Pelturagonia borneensis (INGER, 1960)
- Pelturagonia cephalum MOCQUARD, 1890
- Pelusios broadleyi BOUR, 1986
- Pelusios gabonensis (DUMÉRIL, 1856)
- Pelusios sinuatus (SMITH, 1838)
- Pelusios subniger (BONNATERRE, 1789)
- Perochirus ateles (DUMÉRIL, 1856)
- Phalotris bilineatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Phalotris lemniscatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Phalotris matogrossensis DE LEMA, D’AGOSTINI & CAPPELLARI, 2005
- Phalotris nasutus (GOMES, 1915)
- Phalotris nigrilatus FERRAREZZI, 1993
- Phalotris spegazzinii (BOULENGER, 1913)
- Phalotris suspectus (AMARAL, 1924)
- Phalotris tricolor (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Phelsuma abbotti STEJNEGER, 1893
- Phelsuma antanosy RAXWORTHY & NUSSBAUM, 1993
- Phelsuma dorsivittata MERTENS, 1964
- Phelsuma dubia (BOETTGER, 1881)
- Phelsuma laticauda (BOETTGER, 1880)
- Phelsuma lineata GRAY, 1842
- Phelsuma madagascariensis GRAY, 1831
- Phelsuma modesta MERTENS, 1970
- Phelsuma mutabilis (GRANDIDIER, 1869)
- Phelsuma parva MEIER, 1983
- Phelsuma pasteuri MEIER, 1984
- Phelsuma punctulata MERTENS, 1970
- Philochortus hardeggeri (STEINDACHNER, 1891)
- Philochortus intermedius BOULENGER, 1917
- Philochortus phillipsi (BOULENGER, 1898)
- Philochortus spinalis (PETERS, 1874)
- Philochortus zolii SCORTECCI, 1934
- Philodryas aestiva (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Philodryas agassizii (JAN, 1863)
- Philodryas boliviana BOULENGER, 1896
- Philodryas chamissonis (WIEGMANN, 1835)
- Philodryas erlandi LÖNNBERG, 1902
- Philodryas nattereri (STEINDACHNER, 1870)
- Philodryas olfersii (LICHTENSTEIN, 1823)
- Philodryas patagoniensis (GIRARD, 1858)
- Philodryas psammophidea GÜNTHER, 1872
- Philodryas varia (JAN, 1863)
- Philothamnus brunneus TRAPE, HUGHES & MEDIANNIKOV, 2021
- Philothamnus carinatus (ANDERSSON, 1901)
- Philothamnus dorsalis (BOCAGE, 1866)
- Philothamnus heterodermus (HALLOWELL, 1857)
- Philothamnus hoplogaster (GÜNTHER, 1863)
- Philothamnus irregularis (LEACH, 1819)
- Philothamnus natalensis (SMITH, 1848)
- Philothamnus nitidus (GÜNTHER, 1863)
- Philothamnus ornatus BOCAGE, 1872
- Philothamnus semivariegatus (SMITH, 1840)
- Phimophis guerini (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Phimophis guianensis (TROSCHEL, 1848)
- Phisalixella arctifasciata (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Phoenicolacerta troodica (WERNER, 1936)
- Pholidobolus vertebralis (O'SHAUGHNESSY, 1879)
- Pholidoscelis alboguttatus (BOULENGER, 1896)
- Pholidoscelis atratus (GARMAN, 1887)
- Pholidoscelis auberi (COCTEAU, 1838)
- Pholidoscelis chrysolaemus (COPE, 1868)
- Pholidoscelis cineraceus (BARBOUR & NOBLE, 1915)
- Pholidoscelis corvinus (COPE, 1861)
- Pholidoscelis desechensis (HEATWOLE & TORRES, 1967)
- Pholidoscelis dorsalis (GRAY, 1838)
- Pholidoscelis erythrocephalus (SHAW, 1802)
- Pholidoscelis exsul (COPE, 1862)
- Pholidoscelis fuscatus (GARMAN, 1887)
- Pholidoscelis griswoldi (BARBOUR, 1916)
- Pholidoscelis lineolatus (DUMÉRIL & BIBRON, 1839)
- Pholidoscelis major (DUMÉRIL & BIBRON, 1839)
- Pholidoscelis maynardii (GARMAN, 1888)
- Pholidoscelis plei (DUMÉRIL & BIBRON, 1839)
- Pholidoscelis pluvianotatus (GARMAN, 1887)
- Pholidoscelis polops (COPE, 1862)
- Pholidoscelis taeniurus (COPE, 1862)
- Pholidoscelis wetmorei (STEJNEGER, 1913)
- Phrynocephalus erythrurus ZUGMAYER, 1909
- Phrynocephalus helioscopus (PALLAS, 1771)
- Phrynocephalus mystaceus (PALLAS, 1776)
- Phrynocephalus przewalskii STRAUCH, 1876
- Phrynocephalus saidalievi SATTOROV, 1981
- Phrynocephalus strauchi NIKOLSKY, 1899
- Phrynocephalus vlangalii STRAUCH, 1876
- Phrynonax poecilonotus (GÜNTHER, 1858)
- Phrynops geoffroanus (SCHWEIGGER, 1812)
- Phrynops hilarii (DUMÉRIL & BIBRON, 1835)
- Phrynops tuberosus (PETERS, 1870)
- Phrynosoma braconnieri BOCOURT, 1870
- Phrynosoma cerroense STEJNEGER, 1893
- Phrynosoma cornutum (HARLAN, 1825)
- Phrynosoma coronatum (BLAINVILLE, 1835)
- Phrynosoma goodei STEJNEGER, 1893
- Phrynosoma hernandesi GIRARD, 1858
- Phrynosoma modestum GIRARD, 1852
- Phrynosoma orbiculare (LINNAEUS, 1758)
- Phrynosoma ornatissimum GIRARD, 1858
- Phrynosoma platyrhinos GIRARD, 1852
- Phyllodactylus benedettii RAMÍREZ-REYES & FLORES-VILLELA, 2018
- Phyllodactylus lepidopygus (TSCHUDI, 1845)
- Phyllodactylus microphyllus COPE, 1875
- Phyllodactylus pulcher GRAY, 1828
- Phyllodactylus saxatilis DIXON, 1964
- Phyllopezus diamantino DUBEUX, GONÇALVES, PALMEIRA, NUNES, CASSIMIRO, GAMBLE, WERNECK, RODRIGUES & MOTT, 2022
- Phyllopezus periosus RODRIGUES, 1986
- Phyllopezus pollicaris (SPIX, 1825)
- Phyllorhynchus browni STEJNEGER, 1890
- Phyllorhynchus decurtatus (COPE, 1868)
- Phyllurus platurus (SHAW, 1790)
- Phymaturus calcogaster SCOLARO & CEI, 2003
- Phymaturus camilae SCOLARO, JARA & PINCHEIRA-DONOSO, 2013
- Phymaturus ceii SCOLARO & IBARGÜENGOYTÍA, 2007
- Phymaturus extrilidus LOBO, ESPINOZA, SANABRIA & QUIROGA, 2012
- Phymaturus palluma (MOLINA, 1782)
- Phymaturus patagonicus KOSLOWSKY, 1898
- Phymaturus spurcus BARBOUR, 1921
- Phymaturus tenebrosus LOBO & QUINTEROS, 2005
- Physignathus cocincinus CUVIER, 1829
- Pinoyscincus jagori (PETERS, 1864)
- Pituophis catenifer (BLAINVILLE, 1835)
- Pituophis deppei (DUMÉRIL, 1853)
- Pituophis lineaticollis (COPE, 1861)
- Pituophis melanoleucus (DAUDIN, 1803)
- Placosoma glabellum (PETERS, 1870)
- Placosoma limaverdorum BORGES-NOJOSA, CARAMASCHI & RODRIGUES, 2016
- Plagiopholis nuchalis (BOULENGER, 1893)
- Platemys platycephala (SCHNEIDER, 1792)
- Platyceps bholanathi (SHARMA, 1976)
- Platyceps najadum (EICHWALD, 1831)
- Platyceps plinii (MERREM, 1820)
- Platyceps rhodorachis (JAN, 1863)
- Platyceps schmidtleri (SCHÄTTI & MCCARTHY, 2001)
- Platysternon megacephalum GRAY, 1831
- Plestiodon bilineatus (TANNER, 1958)
- Plestiodon callicephalus (BOCOURT, 1879)
- Plestiodon elegans (BOULENGER, 1887)
- Plestiodon laticeps (SCHNEIDER, 1801)
- Plestiodon latiscutatus HALLOWELL, 1861
- Plestiodon longiartus GARCÍA-VÁZQUEZ, PAVÓN-VÁZQUEZ, FERIA-ORTIZ & NIETO-MONTES DE OCA, 2021
- Plestiodon lynxe (WIEGMANN, 1834)
- Plestiodon sumichrasti (COPE, 1867)
- Plestiodon tetragrammus BAIRD, 1859
- Plica caribeana MURPHY & JOWERS, 2013
- Plica medemi MURPHY & JOWERS, 2013
- Plica plica (LINNAEUS, 1758)
- Plica umbra (LINNAEUS, 1758)
- Pliocercus elapoides COPE, 1860
- Podarcis bocagei (LOPEZ-SEOANE, 1885)
- Podarcis carbonelli PÉREZ-MELLADO, 1981
- Podarcis erhardii (BEDRIAGA, 1882)
- Podarcis hispanicus (STEINDACHNER, 1870)
- Podarcis lilfordi (GÜNTHER, 1874)
- Podarcis muralis (LAURENTI, 1768)
- Podarcis siculus (RAFINESQUE-SCHMALTZ, 1810)
- Podarcis tauricus (GEORGI, 1801)
- Podarcis vaucheri (BOULENGER, 1905)
- Podarcis waglerianus GISTEL, 1868
- Podocnemis erythrocephala (SPIX, 1824)
- Podocnemis expansa (SCHWEIGGER, 1812)
- Podocnemis lewyana DUMÉRIL, 1852
- Podocnemis sextuberculata CORNALIA, 1849
- Podocnemis unifilis TROSCHEL, 1848
- Podocnemis vogli MÜLLER, 1935
- Pogona barbata (CUVIER, 1829)
- Pogona vitticeps (AHL, 1926)
- Polychrus acutirostris SPIX, 1825
- Polychrus marmoratus (LINNAEUS, 1758)
- Porthidium lansbergii (SCHLEGEL, 1841)
- Porthidium ophryomegas (BOCOURT, 1868)
- Potamites ecpleopus (COPE, 1875)
- Potamites erythrocularis CHÁVEZ & CATENAZZI, 2014
- Potamites juruazensis (AVILA-PIRES & VITT, 1998)
- Potamites montanicola CHÁVEZ & VÁSQUEZ, 2012
- Potamites strangulatus (COPE, 1868)
- Potamites trachodus (UZZELL, 1966)
- Prasinohaema flavipes (PARKER, 1936)
- Prasinohaema prehensicauda (LOVERIDGE, 1945)
- Pristidactylus achalensis (GALLARDO, 1964)
- Pristidactylus fasciatus (D’ORBIGNY & BIBRON, 1837)
- Pristidactylus nigroiugulus CEI, SCOLARO & VIDELA, 2001
- Pristurus crucifer (VALENCIENNES, 1861)
- Pristurus flavipunctatus RÜPPELL, 1835
- Pristurus guweirensis HAAS, 1943
- Pristurus longipes PETERS, 1871
- Pristurus rupestris BLANFORD, 1874
- Proatheris superciliaris (PETERS, 1855)
- Procellosaurinus erythrocercus RODRIGUES, 1991
- Procellosaurinus tetradactylus RODRIGUES, 1991
- Prosymna meleagris (REINHARDT, 1843)
- Prosymna ruspolii (BOULENGER, 1896)
- Prosymna stuhlmanni (PFEFFER, 1893)
- Protobothrops flavoviridis (HALLOWELL, 1861)
- Protobothrops jerdonii (GÜNTHER, 1875)
- Protobothrops mangshanensis (ZHAO, 1990)
- Protobothrops mucrosquamatus (CANTOR, 1839)
- Psammobates geometricus (LINNAEUS, 1758)
- Psammobates oculifer (KUHL, 1820)
- Psammodromus algirus (LINNAEUS, 1758)
- Psammodromus hispanicus FITZINGER, 1826
- Psammodynastes pulverulentus (BOIE, 1827)
- Psammophilus blanfordanus (STOLICZKA, 1871)
- Psammophilus dorsalis (GRAY, 1831)
- Psammophis angolensis (BOCAGE, 1872)
- Psammophis condanarus (MERREM, 1820)
- Psammophis lineatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Psammophis lineolatus (BRANDT, 1838)
- Psammophis mossambicus PETERS, 1882
- Psammophis phillipsii (HALLOWELL, 1844)
- Psammophis schokari (FORSKÅL, 1775)
- Psammophis sibilans (LINNAEUS, 1758)
- Psammophis subtaeniatus PETERS, 1882
- Psammophis sudanensis WERNER, 1919
- Psammophylax tritaeniatus (GÜNTHER, 1868)
- Pseudagkistrodon rudis (BOULENGER, 1906)
- Pseudechis australis (GRAY, 1842)
- Pseudechis porphyriacus (SHAW, 1794)
- Pseudechis weigeli (WELLS & WELLINGTON, 1987)
- Pseudelaphe flavirufa (COPE, 1867)
- Pseudemys concinna (LE CONTE, 1830)
- Pseudemys gorzugi WARD, 1984
- Pseudemys nelsoni CARR, 1938
- Pseudemys peninsularis CARR, 1938
- Pseudemys rubriventris (LE CONTE, 1830)
- Pseuderemias mucronata (BLANFORD, 1870)
- Pseuderemias striata (PETERS, 1874)
- Pseudoboa coronata SCHNEIDER, 1801
- Pseudoboa neuwiedii (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Pseudoboa nigra (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Pseudoboodon gascae PERACCA, 1897
- Pseudocalotes bapoensis (YANG, SU & LI, 1979)
- Pseudocalotes flavigula (SMITH, 1924)
- Pseudocalotes kingdonwardi (SMITH, 1935)
- Pseudocalotes microlepis (BOULENGER, 1888)
- Pseudocalotes poilani (BOURRET, 1939)
- Pseudocalotes tympanistriga (GRAY, 1831)
- Pseudocalotes ziegleri HALLERMANN, TRUONG, ORLOV & ANANJEVA, 2010
- Pseudocerastes persicus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Pseudocordylus melanotus (SMITH, 1838)
- Pseudoeryx plicatilis (LINNAEUS, 1758)
- Pseudoferania polylepis (FISCHER, 1886)
- Pseudoficimia frontalis (COPE, 1864)
- Pseudogonatodes guianensis PARKER, 1935
- Pseudohaje goldii (BOULENGER, 1895)
- Pseudonaja textilis (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Pseudopus apodus (PALLAS, 1775)
- Pseudothecadactylus australis (GÜNTHER, 1877)
- Pseudotrapelus sinaitus (HEYDEN, 1827)
- Pseudoxyrhopus kely RAXWORTHY & NUSSBAUM, 1994
- Pseudoxyrhopus sokosoko RAXWORTHY & NUSSBAUM, 1994
- Psilops mucugensis RODRIGUES, RECODER, TEIXEIRA JR, ROSCITO, GUERRERO, SALES-NUNES, FREITAS, FERNANDES, BOCCHIGLIERI, VECHIO, FORTES-LEITE, CAMPOS NOGUEIRA, DAMASCENO, MACHADO-PELLEGRINO, SUZART-ARGÔLO & AMARO, 2017
- Psilops paeminosus (RODRIGUES, 1991)
- Psychosaura agmosticha (RODRIGUES, 2000)
- Psychosaura macrorhyncha (HOGE, 1946)
- Ptyas korros (SCHLEGEL, 1837)
- Ptyas mucosa (LINNAEUS, 1758)
- Ptyodactylus hasselquistii (DONNDORFF, 1798)
- Pygomeles trivittatus BOULENGER, 1896
- Pygopus lepidopodus (LACÉPÈDE, 1804)
- Pygopus nigriceps (FISCHER, 1882)
- Python bivittatus KUHL, 1820
- Python breitensteini STEINDACHNER, 1881
- Python molurus (LINNAEUS, 1758)
- Python natalensis SMITH, 1840
- Python regius (SHAW, 1802)
- Python sebae (GMELIN, 1789)
- Pyxis arachnoides BELL, 1827
- Pyxis planicauda (GRANDIDIER, 1867)
- Rafetus euphraticus (DAUDIN, 1801)
- Ramphotyphlops erebus KRAUS, 2023
- Ramphotyphlops hatmaliyeb WYNN, REYNOLDS, BUDEN, FALANRUW & LYNCH, 2012
- Ramphotyphlops lineatus (SCHLEGEL, 1839)
- Rankinia diemensis (GRAY, 1841)
- Regina grahamii BAIRD & GIRARD, 1853
- Regina septemvittata (SAY, 1825)
- Rena dulcis BAIRD & GIRARD, 1853
- Rena humilis BAIRD & GIRARD, 1853
- Rhabdophis conspicillatus (GÜNTHER, 1872)
- Rhabdophis plumbicolor (CANTOR, 1839)
- Rhabdophis rhodomelas (BOIE, 1827)
- Rhabdophis subminiatus (SCHLEGEL, 1837)
- Rhabdophis tigrinus (BOIE, 1826)
- Rhabdops aquaticus GIRI, DEEPAK, CAPTAIN & GOWER, 2017
- Rhacodactylus auriculatus (BAVAY, 1869)
- Rhadinaea decorata (GÜNTHER, 1858)
- Rhadinaea fulvivittis COPE, 1875
- Rhadinaea hesperia BAILEY, 1940
- Rhadinaea laureata (GÜNTHER, 1868)
- Rhamnophis aethiopissa GÜNTHER, 1862
- Rhamnophis batesii (BOULENGER, 1908)
- Rhamphiophis maradiensis CHIRIO & INEICH, 1991
- Rhamphiophis rostratus PETERS, 1854
- Rhampholeon plumptrei HUGHES, BEHANGANA, TILBURY, MENEGON, KUSAMBA, & GREENBAUM, 2024
- Rhampholeon tilburyi BRANCH, BAYLISS & TOLLEY, 2014
- Rhinemys rufipes (SPIX, 1824)
- Rhinobothryum bovallii (ANDERSSON, 1916)
- Rhinocheilus lecontei BAIRD & GIRARD, 1853
- Rhinoclemmys diademata (MERTENS, 1954)
- Rhinoclemmys nasuta (BOULENGER, 1902)
- Rhinoclemmys pulcherrima (GRAY, 1855)
- Rhinoclemmys punctularia (DAUDIN, 1801)
- Rhynchocalamus levitoni (TORKI, 2017)
- Riama unicolor GRAY, 1858
- Rieppeleon kerstenii (PETERS, 1868)
- Riolama stellata RECODER, PRATES, MARQUES-SOUZA, CAMACHO, SALES-NUNES, VECHIO, GHELLERE, MCDIARMID & RODRIGUES, 2020
- Riopa albopunctata GRAY, 1846
- Riopa guentheri (PETERS, 1879)
- Riopa punctata (LINNAEUS, 1758)
- Riopa vosmaerii (GRAY, 1839)
- Sacalia bealei (GRAY, 1831)
- Saiphos equalis (GRAY, 1825)
- Salea anamallayana (BEDDOME, 1878)
- Salea horsfieldii GRAY, 1845
- Saltuarius cornutus (OGILBY, 1892)
- Saltuarius moritzi COUPER, SADLIER, SHEA & WORTHINGTON-WILMER, 2008
- Salvadora bairdi JAN, 1860
- Salvadora deserticola SCHMIDT, 1940
- Salvadora grahamiae BAIRD & GIRARD, 1853
- Salvadora hexalepis (COPE, 1867)
- Salvadora lineata SCHMIDT, 1940
- Salvator merianae DUMÉRIL & BIBRON, 1839
- Salvator rufescens (GÜNTHER, 1871)
- Sanzinia madagascariensis (DUMÉRIL & BIBRON, 1844)
- Sauromalus varius DICKERSON, 1919
- Scaphiodontophis annulatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Scaphiodontophis venustissimus (GÜNTHER, 1894)
- Scelarcis perspicillata (DUMÉRIL & BIBRON, 1839)
- Sceloporus aeneus WIEGMANN, 1828
- Sceloporus arenicolus DEGENHARDT & JONES, 1972
- Sceloporus becki VAN DENBURGH, 1905
- Sceloporus bicanthalis SMITH, 1937
- Sceloporus bimaculosus PHELAN & BRATTSTROM, 1955
- Sceloporus brownorum SMITH, WATKINS-COLWELL, LEMOS-ESPINAL & CHISZAR, 1997
- Sceloporus bulleri BOULENGER, 1895
- Sceloporus clarkii BAIRD & GIRARD, 1852
- Sceloporus consobrinus BAIRD & GIRARD, 1854
- Sceloporus cowlesi LOWE & NORRIS, 1956
- Sceloporus cyanogenys COPE, 1885
- Sceloporus cyanostictus AXTELL & AXTELL, 1971
- Sceloporus edwardtaylori SMITH, 1936
- Sceloporus formosus WIEGMANN, 1834
- Sceloporus geminus CAMPILLO-GARCÍA, FLORES-VILLELA, BUTLER, BENABIB, CASTIGLIA, 2023
- Sceloporus graciosus BAIRD & GIRARD, 1852
- Sceloporus grammicus WIEGMANN, 1828
- Sceloporus heterolepis BOULENGER, 1895
- Sceloporus horridus WIEGMANN, 1834
- Sceloporus internasalis SMITH & BUMZAHEM, 1955
- Sceloporus jalapae GÜNTHER, 1890
- Sceloporus jarrovii COPE, 1875
- Sceloporus lemosespinali LARA-GÓNGORA, 2004
- Sceloporus maculosus SMITH, 1934
- Sceloporus megalepidurus SMITH, 1934
- Sceloporus melanorhinus BOCOURT, 1876
- Sceloporus merriami STEJNEGER, 1904
- Sceloporus minor COPE, 1885
- Sceloporus mucronatus COPE, 1885
- Sceloporus nelsoni COCHRAN, 1923
- Sceloporus occidentalis BAIRD & GIRARD, 1852
- Sceloporus olivaceus SMITH, 1934
- Sceloporus poinsettii BAIRD & GIRARD, 1852
- Sceloporus salvini GÜNTHER, 1890
- Sceloporus scalaris WIEGMANN, 1828
- Sceloporus shannonorum LANGEBARTEL, 1959
- Sceloporus siniferus COPE, 1870
- Sceloporus slevini SMITH, 1937
- Sceloporus smithi HARTWEG & OLIVER, 1937
- Sceloporus spinosus WIEGMANN, 1828
- Sceloporus sugillatus SMITH, 1942
- Sceloporus taeniocnemis COPE, 1885
- Sceloporus torquatus WIEGMANN, 1828
- Sceloporus tristichus COPE, 1875
- Sceloporus undulatus (BOSC & DAUDIN, 1801)
- Sceloporus unicanthalis SMITH, 1937
- Sceloporus vandenburgianus COPE, 1896
- Sceloporus variabilis WIEGMANN, 1834
- Sceloporus virgatus SMITH, 1938
- Sceloporus woodi STEJNEGER, 1918
- Sceloporus zosteromus COPE, 1863
- Scelotes inornatus (SMITH, 1849)
- Scelotes uluguruensis BARBOUR & LOVERIDGE, 1928
- Scincella cherriei (COPE, 1893)
- Scincella gemmingeri (COPE, 1864)
- Scincella lateralis (SAY, 1822)
- Scincella reevesii (GRAY, 1839)
- Scincus scincus (LINNAEUS, 1758)
- Senticolis triaspis (COPE, 1866)
- Sepsophis punctatus BEDDOME, 1870
- Shinisaurus crocodilurus AHL, 1930
- Siagonodon septemstriatus (SCHNEIDER, 1801)
- Sibon bevridgelyi ARTEAGA, SALAZAR-VALENZUELA, MEBERT, PEÑAFIEL, AGUIAR, SÁNCHEZ-NIVICELA, PYRON, COLSTON, CISNEROS-HEREDIA, YÁNEZ-MUÑOZ, VENEGAS, GUAYASAMIN & TORRES-CARVAJAL, 2018
- Sibon canopy ARTEAGA & BATISTA, 2023
- Sibon dimidiatus (GÜNTHER, 1872)
- Sibon nebulatus (LINNAEUS, 1758)
- Sibynophis bivittatus (BOULENGER, 1894)
- Sibynophis sagittarius (CANTOR, 1839)
- Sibynophis subpunctatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Siderolamprus enneagrammus COPE, 1861
- Siderolamprus rozellae (SMITH, 1942)
- Siebenrockiella crassicollis (GRAY, 1831)
- Simalia amethistina (SCHNEIDER, 1801)
- Simalia boeleni (BRONGERSMA, 1953)
- Simalia clastolepis (HARVEY, BARKER, AMMERMAN & CHIPPINDALE, 2000)
- Sinomicrurus iwasakii (MAKI, 1935)
- Sinomicrurus japonicus (GÜNTHER, 1868)
- Sinomicrurus kelloggi (POPE, 1928)
- Sinomicrurus macclellandi (REINHARDT, 1844)
- Sinomicrurus sauteri (STEINDACHNER, 1913)
- Siphlophis cervinus (LAURENTI, 1768)
- Siphlophis compressus (DAUDIN, 1803)
- Siphlophis longicaudatus (ANDERSSON, 1901)
- Siphlophis pulcher (RADDI, 1820)
- Sistrurus catenatus (RAFINESQUE, 1818)
- Sistrurus miliarius (LINNAEUS, 1766)
- Sistrurus tergeminus (SAY, 1823)
- Sitana ponticeriana CUVIER, 1829
- Smaug giganteus (SMITH, 1844)
- Smaug swazicus BATES & STANLEY, 2020
- Smithophis bicolor (BLYTH, 1855)
- Sonora aemula (COPE, 1879)
- Sonora episcopa (KENNICOTT, 1859)
- Sonora fasciata (COPE, 1892)
- Sonora occipitalis (HALLOWELL, 1854)
- Sonora semiannulata BAIRD & GIRARD, 1853
- Spalerosophis diadema (SCHLEGEL, 1837)
- Sphaerodactylus alphus MCCRANIE & HEDGES, 2013
- Sphaerodactylus armstrongi NOBLE, 1933
- Sphaerodactylus cochranae RUIBAL, 1946
- Sphaerodactylus copei STEINDACHNER, 1867
- Sphaerodactylus cryphius THOMAS & SCHWARTZ, 1977
- Sphaerodactylus darlingtoni SHREVE, 1968
- Sphaerodactylus difficilis BARBOUR, 1914
- Sphaerodactylus grandisquamis STEJNEGER, 1904
- Sphaerodactylus omoglaux THOMAS, 1982
- Sphaerodactylus oxyrhinus GOSSE, 1850
- Sphaerodactylus poindexteri MCCRANIE & HEDGES, 2013
- Sphaerodactylus savagei SHREVE, 1968
- Sphaerodactylus semasiops THOMAS, 1975
- Sphaerodactylus streptophorus THOMAS & SCHWARTZ, 1977
- Sphaerodactylus vincenti BOULENGER, 1891
- Sphaerodactylus zygaena SCHWARTZ, 1977
- Sphenodon punctatus (GRAY, 1842)
- Sphenomorphus cameronicus SMITH, 1924
- Sphenomorphus dussumieri (DUMÉRIL & BIBRON, 1839)
- Sphenomorphus jobiensis (MEYER, 1874)
- Sphenomorphus melanopogon (DUMÉRIL & BIBRON, 1839)
- Sphenomorphus praesignis (BOULENGER, 1900)
- Sphenomorphus puncticentralis ISKANDAR, 1994
- Sphenomorphus sanctus (DUMÉRIL & BIBRON, 1839)
- Sphenomorphus undulatus (PETERS & DORIA, 1878)
- Spilotes pullatus (LINNAEUS, 1758)
- Spilotes sulphureus (WAGLER, 1824)
- Spondylurus sloanii (DAUDIN, 1803)
- Staurotypus salvinii GRAY, 1864
- Staurotypus triporcatus (WIEGMANN, 1828)
- Stegonotus batjanensis (GÜNTHER, 1865)
- Stegonotus cucullatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Stegonotus guentheri BOULENGER, 1895
- Stenocercus albolineatus TEIXEIRA, PRATES, NISA, SILVA-MARTINS, STRÜSSMANN & RODRIGUES, 2015
- Stenocercus boettgeri BOULENGER, 1911
- Stenocercus cupreus BOULENGER, 1885
- Stenocercus empetrus FRITTS, 1972
- Stenocercus omari VENEGAS, ECHEVARRÍA, GARCÍA-BURNEO & KOCH, 2016
- Stenocercus orientalis FRITTS, 1972
- Stenocercus roseiventris D’ORBIGNY in DUMÉRIL & BIBRON, 1837
- Stenocercus squarrosus NOGUEIRA & RODRIGUES, 2006
- Stenodactylus stenurus WERNER, 1899
- Stenodactylus sthenodactylus (LICHTENSTEIN, 1823)
- Stenolepis ridleyi BOULENGER, 1887
- Stenorrhina degenhardtii (BERTHOLD, 1846)
- Sternotherus carinatus (GRAY, 1856)
- Sternotherus odoratus (LATREILLE, 1802)
- Stigmochelys pardalis (BELL, 1828)
- Storeria dekayi (HOLBROOK, 1839)
- Storeria occipitomaculata (STORER, 1839)
- Storeria storerioides (COPE, 1866)
- Strobilurus torquatus WIEGMANN, 1834
- Strophurus krisalys SADLIER, 2005
- Strophurus williamsi (KLUGE, 1963)
- Sundatyphlops polygrammicus (SCHLEGEL, 1839)
- Suta gouldii (GRAY, 1841)
- Suta suta (PETERS, 1863)
- Sympholis lippiens COPE, 1862
- Tachymenis ocellata DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Tachymenis trigonatus (LEYBOLD, 1873)
- Tachymenoides affinis BOULENGER, 1896
- Tachymenoides goodallae LEHR, LUNDBERG, CUSI, SITES, TORRES & AGUILAR-PUNTRIANO, 2025
- Taeniophallus brevirostris (PETERS, 1863)
- Takydromus sexlineatus DAUDIN, 1802
- Tantalophis discolor (GÜNTHER, 1860)
- Tantilla atriceps (GÜNTHER, 1895)
- Tantilla bocourti (GÜNTHER, 1895)
- Tantilla briggsi SAVITZKY & SMITH, 1971
- Tantilla calamarina COPE, 1866
- Tantilla coronata BAIRD & GIRARD, 1853
- Tantilla cuniculator SMITH, 1939
- Tantilla excelsa MCCRANIE & SMITH, 2017
- Tantilla flavilineata SMITH & BURGER, 1950
- Tantilla gottei MCCRANIE & SMITH, 2017
- Tantilla gracilis BAIRD & GIRARD, 1853
- Tantilla impensa CAMPBELL, 1998
- Tantilla johnsoni WILSON, VAUGHN & DIXON, 1999
- Tantilla melanocephala (LINNAEUS, 1758)
- Tantilla moesta (GÜNTHER, 1863)
- Tantilla oaxacae WILSON & MEYER, 1971
- Tantilla planiceps (BLAINVILLE, 1835)
- Tantilla rubra COPE, 1875
- Tantilla slavensi PÉREZ-HIGAREDA, SMITH & SMITH, 1985
- Tantilla stenigrammi MCCRANIE & SMITH, 2017
- Tantilla striata DUNN, 1928
- Tantilla supracincta (PETERS, 1863)
- Tantilla taeniata BOCOURT, 1883
- Tantilla tayrae WILSON, 1983
- Tantilla trilineata (PETERS, 1880)
- Tantilla triseriata SMITH & SMITH, 1951
- Tantilla tritaeniata SMITH & WILLIAMS, 1966
- Tantilla vulcani CAMPBELL, 1998
- Tantilla wilcoxi STEJNEGER, 1902
- Tantilla yaquia SMITH, 1942
- Tantillita canula (COPE, 1875)
- Tarentola americana (GRAY, 1831)
- Tarentola ephippiata O'SHAUGHNESSY, 1875
- Tarentola mauritanica (LINNAEUS, 1758)
- Tarentola panousei PASTEUR, 1959
- Teira dugesii (MILNE-EDWARDS, 1829)
- Teius teyou (DAUDIN, 1802)
- Telescopus dhara (FORSKÅL, 1775)
- Telescopus semiannulatus SMITH, 1849
- Telescopus somalicus (PARKER, 1949)
- Tenuidactylus caspius (EICHWALD, 1831)
- Tenuidactylus fedtschenkoi (STRAUCH, 1887)
- Teratoscincus bedriagai NIKOLSKY, 1900
- Teratoscincus scincus (SCHLEGEL, 1858)
- Terrapene carolina (LINNAEUS, 1758)
- Terrapene coahuila SCHMIDT & OWENS, 1944
- Terrapene mexicana (GRAY, 1849)
- Terrapene triunguis (AGASSIZ, 1857)
- Testudo graeca LINNAEUS, 1758
- Testudo hermanni GMELIN, 1789
- Testudo horsfieldii GRAY, 1844
- Testudo kleinmanni LORTET, 1883
- Testudo marginata SCHOEPFF, 1792
- Tetracheilostoma bilineatum (SCHLEGEL, 1839)
- Thamnodynastes longicaudus FRANCO, FERREIRA, MARQUES & SAZIMA, 2003
- Thamnodynastes pallidus (LINNAEUS, 1758)
- Thamnodynastes silvai TREVINE, CAICEDO-PORTILLA, HOOGMOED, THOMAS, FRANCO, MONTINGELLI, OSORNO-MUÑOZ & ZAHER, 2021
- Thamnophis ahumadai GRÜNWALD, MENDOZA-PORTILLA, GRÜNWALD, MONTAÑO-RUVALCABA, FRANZ-CHÁVEZ, GARCÍA-VÁZQUEZ & REYES-VELASCO, 2024
- Thamnophis atratus KENNICOTT, 1860
- Thamnophis butleri (COPE, 1889)
- Thamnophis couchii (KENNICOTT, 1859)
- Thamnophis cyrtopsis (KENNICOTT, 1860)
- Thamnophis elegans (BAIRD & GIRARD, 1853)
- Thamnophis eques (REUSS, 1834)
- Thamnophis errans SMITH, 1942
- Thamnophis exsul ROSSMAN, 1969
- Thamnophis foxi ROSSMAN & BLANEY, 1968
- Thamnophis hammondii (KENNICOTT, 1860)
- Thamnophis marcianus (BAIRD & GIRARD, 1853)
- Thamnophis melanogaster (PETERS, 1864)
- Thamnophis nigronuchalis THOMPSON, 1957
- Thamnophis ordinoides (BAIRD & GIRARD, 1852)
- Thamnophis postremus SMITH, 1942
- Thamnophis proximus (SAY, 1823)
- Thamnophis pulchrilatus (COPE, 1885)
- Thamnophis radix (BAIRD & GIRARD, 1853)
- Thamnophis saurita (LINNAEUS, 1766)
- Thamnophis scalaris COPE, 1861
- Thamnophis scaliger (JAN, 1863)
- Thamnophis sirtalis (LINNAEUS, 1758)
- Thamnophis unilabialis TANNER, 1985
- Thamnosophis infrasignatus (GÜNTHER, 1882)
- Thamnosophis lateralis (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Thecadactylus rapicauda (HOUTTUYN, 1782)
- Thelotornis capensis SMITH, 1849
- Thelotornis kirtlandii (HALLOWELL, 1844)
- Thelotornis mossambicanus (BOCAGE, 1895)
- Thrasops flavigularis (HALLOWELL, 1852)
- Thrasops jacksonii GÜNTHER, 1895
- Tiliqua rugosa (GRAY, 1825)
- Tiliqua scincoides (WHITE, 1790)
- Timon lepidus (DAUDIN, 1802)
- Timon pater (LATASTE, 1880)
- Tomodon dorsatus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Toxicodryas adamantea GREENBAUM, ALLEN, VAUGHAN, PAUWELS, WALLACH, KUSAMBA, MUNINGA, ARISTOTE, MALI, BADJEDJEA, PENNER, RÖDEL, RIVERA, STERKHOVA, JOHNSON, TAPONDJOU & BROWN, 2021
- Toxicodryas blandingii (HALLOWELL, 1844)
- Toxicodryas pulverulenta (FISCHER, 1856)
- Toxicodryas vexator GREENBAUM, ALLEN, VAUGHAN, PAUWELS, WALLACH, KUSAMBA, MUNINGA, ARISTOTE, MALI, BADJEDJEA, PENNER, RÖDEL, RIVERA, STERKHOVA, JOHNSON, TAPONDJOU & BROWN, 2021
- Trachemys adiutrix VANZOLINI, 1995
- Trachemys callirostris (GRAY, 1855)
- Trachemys decussata (GRAY, 1831)
- Trachemys dorbigni (DUMÉRIL & BIBRON, 1835)
- Trachemys nebulosa (VAN DENBURGH, 1895)
- Trachemys ornata (GRAY, 1831)
- Trachemys scripta (THUNBERG, 1792)
- Trachemys terrapen (BONNATERRE, 1789)
- Trachemys venusta (GRAY, 1856)
- Trachischium reticulata (BLYTH, 1855)
- Trachylepis acutilabris (PETERS, 1862)
- Trachylepis adamastor CERIACO, 2015
- Trachylepis affinis (GRAY, 1839)
- Trachylepis albilabris (HALLOWELL, 1857)
- Trachylepis boettgeri (BOULENGER, 1887)
- Trachylepis brevicollis (WIEGMANN, 1837)
- Trachylepis capensis (GRAY, 1831)
- Trachylepis elegans (PETERS, 1854)
- Trachylepis farooqii BARBOSA, PARRINHA, MARQUES, HARUN, SOUSA-RECODER, SENA, BILA, INEICH, FERNANDES, PASSOS, RODRIGUES & CERÍACO, 2025
- Trachylepis gravenhorstii (DUMÉRIL & BIBRON, 1839)
- Trachylepis hildebrandtii (PETERS, 1874)
- Trachylepis maculilabris (GRAY, 1845)
- Trachylepis notabilis (PETERS, 1879)
- Trachylepis paucisquamis (HOOGMOED, 1978)
- Trachylepis perrotetii (DUMÉRIL & BIBRON, 1839)
- Trachylepis polytropis (BOULENGER, 1903)
- Trachylepis quinquetaeniata (LICHTENSTEIN, 1823)
- Trachylepis spilogaster (PETERS, 1882)
- Trachylepis striata (PETERS, 1844)
- Trachylepis thomensis CERÍACO, MARQUES & BAUER, 2016
- Trachylepis varia (PETERS, 1867)
- Trachylepis wahlbergii (PETERS, 1870)
- Trachylepis wingati (WERNER, 1908)
- Trapelus agilis (OLIVIER, 1807)
- Tretanorhinus nigroluteus COPE, 1861
- Tretanorhinus variabilis DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Tretioscincus agilis (RUTHVEN, 1916)
- Tretioscincus bifasciatus (DUMÉRIL, 1851)
- Tribolonotus novaeguineae (SCHLEGEL, 1834)
- Trilepida dimidiata (JAN, 1861)
- Trilepida macrolepis (PETERS, 1858)
- Trimeresurus albolabris GRAY, 1842
- Trimeresurus cantori (BLYTH, 1846)
- Trimeresurus cyanolabris IDIIATULLINA, NGUYEN, BRAGIN, PAWANGKHANANT, LE, VOGEL, DAVID & POYARKOV, 2024
- Trimeresurus insularis KRAMER, 1977
- Trimeresurus mcgregori TAYLOR, 1919
- Trimeresurus popeiorum SMITH, 1937
- Trimeresurus sabahi REGENASS & KRAMER, 1981
- Trimeresurus septentrionalis KRAMER, 1977
- Trimeresurus stejnegeri SCHMIDT, 1925
- Trimeresurus sumatranus (RAFFLES, 1822)
- Trimerodytes annularis (HALLOWELL, 1856)
- Trimerodytes balteatus COPE, 1895
- Trimerodytes praemaxillaris (ANGEL, 1929)
- Trimorphodon biscutatus (DUMÉRIL, BIBRON & DUMÉRIL, 1854)
- Trimorphodon lyrophanes (COPE, 1860)
- Trimorphodon vilkinsonii COPE, 1886
- Trioceros ituriensis (SCHMIDT, 1919)
- Trioceros laterispinis (LOVERIDGE, 1932)
- Trioceros werneri (TORNIER, 1899)
- Trionyx triunguis (FORSKÅL, 1775)
- Trogonophis wiegmanni KAUP, 1830
- Tropicagama temporalis (GÜNTHER, 1867)
- Tropidodipsas fasciata GÜNTHER, 1858
- Tropidodipsas fischeri (BOULENGER, 1894)
- Tropidodipsas philippii (JAN, 1863)
- Tropidodryas serra (SCHLEGEL, 1837)
- Tropidodryas striaticeps (COPE, 1870)
- Tropidolaemus wagleri (BOIE, 1827)
- Tropidonophis elongatus (JAN, 1865)
- Tropidonophis halmahericus (BOETTGER, 1895)
- Tropidonophis mairii (GRAY, 1841)
- Tropidonophis montanus (LIDTH DE JEUDE, 1911)
- Tropidonophis picturatus (SCHLEGEL, 1837)
- Tropidonophis punctiventris (BOETTGER, 1895)
- Tropidonophis truncatus (PETERS, 1863)
- Tropidophis paucisquamis (MÜLLER, 1901)
- Tropidophorus brookei (GRAY, 1845)
- Tropidosaura montana (GRAY, 1831)
- Tropidurus cocorobensis RODRIGUES, 1987
- Tropidurus erythrocephalus RODRIGUES, 1987
- Tropidurus etheridgei CEI, 1982
- Tropidurus helenae (MANZANI & ABE, 1990)
- Tropidurus hispidus (SPIX, 1825)
- Tropidurus mucujensis RODRIGUES, 1987
- Tropidurus oreadicus RODRIGUES, 1987
- Tropidurus psammonastes RODRIGUES, KASAHARA, YONENAGA-YASSUDA, 1988
- Tropidurus semitaeniatus (SPIX, 1825)
- Tropidurus spinulosus (COPE, 1862)
- Tropidurus torquatus (WIED-NEUWIED, 1820)
- Tropiocolotes tripolitanus PETERS, 1880
- Tupinambis matipu SILVA, RIBEIRO-JÚNIOR & ÁVILA-PIRES, 2018
- Tupinambis quadrilineatus MANZANI & ABE, 1997
- Tupinambis teguixin (LINNAEUS, 1758)
- Tympanocryptis osbornei MELVILLE, CHAPLIN, HUTCHINSON, SUMNER, GRUBER, MACDONALD & SARRE, 2019
- Tympanocryptis rustica MELVILLE, CHAPLIN, HIPSLEY, SARRE, SUMNER & HUTCHINSON, 2019
- Typhlops capitulatus RICHMOND, 1964
- Typhlops leptolepis DOMÍNGUEZ, FONG & ITURRIAGA, 2013
- Tytthoscincus butleri (BOULENGER, 1912)
- Tytthoscincus cophias BOULENGER, 1908
- Tytthoscincus temmincki (DUMÉRIL & BIBRON, 1839)
- Uma notata BAIRD, 1858
- Uma scoparia COPE, 1894
- Underwoodisaurus milii (BORY DE SAINT-VINCENT, 1823)
- Uracentron azureum (LINNAEUS, 1758)
- Uranoscodon superciliosus (LINNAEUS, 1758)
- Uromacer catesbyi (SCHLEGEL, 1837)
- Uromacer oxyrhynchus DUMÉRIL, BIBRON & DUMÉRIL, 1854
- Uromastyx aegyptia (FORSKÅL, 1775)
- Uromastyx dispar HEYDEN, 1827
- Uromastyx ornata HEYDEN, 1827
- Uromastyx princeps O'SHAUGHNESSY, 1880
- Uropeltis pulneyensis (BEDDOME, 1863)
- Urosaurus auriculatus (COPE, 1871)
- Urosaurus bicarinatus (DUMÉRIL, 1856)
- Urosaurus clarionensis (TOWNSEND, 1890)
- Urosaurus gadovi (SCHMIDT, 1921)
- Urosaurus graciosus HALLOWELL, 1854
- Urosaurus lahtelai RAU & LOOMIS, 1977
- Urosaurus microscutatus (VAN DENBURGH, 1894)
- Urosaurus nigricauda (COPE, 1864)
- Urosaurus ornatus (BAIRD & GIRARD, 1852)
- Urostrophus longicauda (BOULENGER, 1891)
- Urostrophus undulatus (WIEGMANN, 1834)
- Urostrophus vautieri DUMÉRIL & BIBRON, 1837
- Urotheca guentheri (DUNN, 1938)
- Vanzosaura multiscutata (AMARAL, 1933)
- Vanzosaura rubricauda (BOULENGER, 1902)
- Varanus albigularis (DAUDIN, 1802)
- Varanus beccarii (DORIA, 1874)
- Varanus bengalensis (DAUDIN, 1802)
- Varanus boehmei JACOBS, 2003
- Varanus bogerti MERTENS, 1950
- Varanus caspius (EICHWALD, 1831)
- Varanus caudolineatus BOULENGER, 1885
- Varanus chlorostigma (GRAY, 1831)
- Varanus dumerilii SCHLEGEL, 1839
- Varanus flavescens (HARDWICKE & GRAY, 1827)
- Varanus griseus (DAUDIN, 1803)
- Varanus indicus (DAUDIN, 1802)
- Varanus keithhornei (WELLS & WELLINGTON, 1985)
- Varanus komodoensis OUWENS, 1912
- Varanus kordensis (MEYER, 1874)
- Varanus macraei BÖHME & JACOBS, 2001
- Varanus marmoratus (WIEGMANN, 1834)
- Varanus nebulosus (GRAY, 1831)
- Varanus niloticus (LINNAEUS, 1766)
- Varanus prasinus (SCHLEGEL, 1839)
- Varanus rudicollis (GRAY, 1845)
- Varanus salvator (LAURENTI, 1768)
- Varanus varius (SHAW, 1790)
- Vermicella annulata (GRAY, 1841)
- Vipera ammodytes (LINNAEUS, 1758)
- Vipera aspis (LINNAEUS, 1758)
- Vipera berus (LINNAEUS, 1758)
- Vipera dinniki NIKOLSKY, 1913
- Vipera eriwanensis (REUSS, 1933)
- Vipera kaznakovi NIKOLSKY, 1909
- Vipera meridionalis BOULENGER, 1903
- Vipera ursinii (BONAPARTE, 1835)
- Virginia striatula (LINNAEUS, 1766)
- Virginia valeriae BAIRD & GIRARD, 1853
- Wetmorena surda SCHWARTZ, 1965
- Woodworthia maculata (GRAY, 1845)
- Xantusia arizonae KLAUBER, 1931
- Xantusia bolsonae WEBB, 1970
- Xantusia extorris WEBB, 1965
- Xantusia gilberti VAN DENBURGH, 1895
- Xantusia gracilis GRISMER & GALVAN, 1986
- Xantusia henshawi STEJNEGER, 1893
- Xantusia sierrae BEZY, 1967
- Xantusia vigilis BAIRD, 1859
- Xenagama batillifera (VAILLANT, 1882)
- Xenagama taylori (PARKER, 1935)
- Xenochrophis cerasogaster (CANTOR, 1839)
- Xenochrophis trianguligerus (BOIE, 1827)
- Xenodermus javanicus REINHARDT, 1836
- Xenodon dorbignyi (BIBRON, 1854)
- Xenodon merremii (WAGLER, 1824)
- Xenodon neuwiedii GÜNTHER, 1863
- Xenodon rabdocephalus (WIED-NEUWIED, 1824)
- Xenodon severus (LINNAEUS, 1758)
- Xenopeltis unicolor REINWARDT, 1827
- Xenopholis scalaris (WUCHERER, 1861)
- Xenopholis undulatus (JENSEN, 1900)
- Xenosaurus agrenon KING & THOMPSON, 1968
- Xenosaurus arboreus LYNCH & SMITH, 1965
- Xenosaurus grandis (GRAY, 1856)
- Xenosaurus manipulus NIETO-MONTES DE OCA, CASTRESANA-VILLANUEVA, CANSECO-MÁRQUEZ & CAMPBELL, 2022
- Xenosaurus rackhami STUART, 1941
- Xenosaurus rectocollaris SMITH & IVERSON, 1993
- Xenosaurus sanmartinensis WERLER & SHANNON, 1961
- Xenoxybelis argenteus (DAUDIN, 1803)
- Zamenis longissimus (LAURENTI, 1768)
- Zamenis scalaris (SCHINZ, 1822)
- Zamenis situla (LINNAEUS, 1758)
- Zonateres lanei BAILEY, THOMAS & DA SILVA, 2005
- Zonosaurus anelanelany RASELIMANANA, RAXWORTHY & NUSSBAUM, 2000
- Zonosaurus laticaudatus (GRANDIDIER, 1869)
- Zonosaurus madagascariensis (GRAY, 1831)
- Zonosaurus maximus BOULENGER, 1896
- Zootoca vivipara (LICHTENSTEIN, 1823)
