Find out what mammals, insects, fish, plants, etc. are endangered here. Use the selection box below to view full lists by group.
The following is a list of all endangered reptiles.
| | Species Name | Scientific Name | Range |
|---|
| 1. | Abronia deppii | Abronia deppii | Mexico |
| 2. | Abronia martindelcampoi | Abronia martindelcampoi | Mexico |
| 3. | Acanthodactylus mechriguensis | Acanthodactylus mechriguensis | Tunisia |
| 4. | Acanthodactylus ahmaddisii | Acanthodactylus ahmaddisii | Jordan |
| 5. | Adelaide Pigmy Blue-tongue Skink | Tiliqua adelaidensis | Australia |
| 6. | Aeolian Wall Lizard | Podarcis raffonei | Italy |
| 7. | African Slender-snouted Crocodile | Crocodylus cataphractus | Western and Central Africa |
| 8. | Agkistrodon bilineatus | Agkistrodon bilineatus | Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua |
| 9. | Alabama Red-belly Turtle | Pseudemys alabamensis | Alabama |
| 10. | Alcatrazes Lancehead | Bothrops alcatraz | Brazil |
| 11. | Allan's Lerista | Lerista allanae | Australia |
| 12. | Alligator Snapping Turtle | Macrochelys temminckii | United States |
| 13. | Amami Takachiho Snake | Achalinus werneri | Japan |
| 14. | Anegada Ground Iguana | Cyclura pinguis | West Indies (British Virgin Islands - Anegada Island) |
| 15. | Angulated Tortoise | Geochelone yniphora | Malagasy Republic (Madagascar) |
| 16. | Annam Leaf Turtle | Mauremys annamensis | Vietnam |
| 17. | Antiguan Racer | Alsophis antiguae | Antigua, Barbuda |
| 18. | Apaporis River Caiman | Caiman crocodilus apaporiensis | Colombia |
| 19. | Aquatic Box Turtle | Terrapene coahuila | Mexico |
| 20. | Arakan Forest Turtle | Heosemys depressa | Myanmar |
| 21. | Aran Rock Lizard | Iberolacerta aranica | France, Spain |
| 22. | Arizona Striped Whiptail | Aspidoscelis arizonae | Arizona |
| 23. | Aruba Island Rattlesnake | Crotalus unicolor | Aruba Island (Netherland Antilles) |
| 24. | Asian Giant Tortoise | Manouria emys | Bangladesh, India, Indonesia, Malaysia, Myanmar, Thailand, Vietnam |
| 25. | Asiatic Softshell Turtle | Amyda cartilaginea | Asia |
| 26. | Assam Roofed Turtle | Pangshura sylhetensis | Bangladesh, India |
| 27. | Atlas Dwarf Lizard | Lacerta andreanskyi | Morocco |
| 28. | Aurelio's Rock Lizard | Iberolacerta aurelioi | Andorra, France, Spain |
| 29. | Bahamas Rock Iguana | Cyclura carinata | Bahamas, Turks and Caicos Islands |
| 30. | Baja California Legless Lizard | Anniella geronimensis | Mexico |
| 31. | Barbados Racer | Liophis perfuscus | West Indies (Barbados) |
| 32. | Barker's Anole | Anolis barkeri | Mexico |
| 33. | Barrington Land Iguana | Conolophus pallidus | Ecuador (Galapagos Islands) |
| 34. | Be'er Sheva Fringe-fingered Lizard | Acanthodactylus beershebensis | Israel (Palestinian Territory, Occupied) |
| 35. | Beal's-eyed Turtle | Sacalia bealei | China |
| 36. | Bedriaga's Fringe-fingered Lizard | Acanthodactylus bedriagai | Algeria |
| 37. | Bedriaga's Skink | Chalcides bedriagai | Portugal, Spain |
| 38. | Bengal Monitor | Varanus bengalensis | Afghanistan, Burma, India, Iran, Iraq, Malaysia, Sri Lanka, Thailand, Vietnam |
| 39. | Bengal Roof Turtle | Kachuga kachuga | Bangladesh, India, Nepal |
| 40. | Bermuda Rock Lizard | Eumeces longirostris | Bermuda - North Atlantic Ocean |
| 41. | Big-headed Turtle | Platysternon megacephalum | China, Laos, Myanmar, Thailand, Vietnam |
| 42. | Black Caiman | Melanosuchus niger | Amazon Basin |
| 43. | Black Racer | Alsophis ater | Jamaica |
| 44. | Black Sea Viper | Vipera pontica | Turkey |
| 45. | Black Softshell Turtle | Trionyx nigricans | Bangladesh |
| 46. | Black-breasted Hill Turtle | Geoemyda spengleri | China, Vietnam |
| 47. | Blackbelly Garter Snake | Thamnophis melanogaster | Mexico |
| 48. | Blanc's Fringe-toed Lizard | Acanthodactylus blanci | Algeria, Tunisia |
| 49. | Blue Mountain Water Skink | Eulamprus leuraensis | Australia |
| 50. | Blunt-nosed Leopard Lizard | Gambelia silus | California |
| 51. | Bog Turtle | Glyptemys muhlenbergii | Eastern United States |
| 52. | Bolson Tortoise | Gopherus flavomarginatus | Mexico |
| 53. | Borbour's Montane Pitviper | Cerrophidion barbouri | Mexico |
| 54. | Bornean River Turtle | Orlitia borneensis | Indonesia, Malaysia |
| 55. | Brauer's Burrowing Skink | Janetaescincus braueri | Indian Ocean (Seychelles) |
| 56. | Brazilian Sideneck Turtle | Phrynops hogei | Brazil |
| 57. | Breedlove's Anole | Anolis breedlovei | Mexico |
| 58. | Broad-snouted Caiman | Caiman latirostris | Argentina, Brazil, Paraguay, Uruguay |
| 59. | Brook Snake | Pseudoxyrhopus kely | Madagascar |
| 60. | Brother's Island Tuatara | Sphenodon guntheri | New Zealand (Brother's Island) |
| 61. | Burmese Peacock Softshell Turtle | Nilssonia formosa | Myanmar |
| 62. | Burmese Peacock Turtle | Morenia ocellata | Burma |
| 63. | Burmese Roofed Turtle | Kachuga trivittata | Myanmar |
| 64. | Burmese Starred Tortoise | Geochelone platynota | Myanmar |
| 65. | Campeche Spiny-tailed Iguana | Ctenosaura alfredschmidti | Mexico |
| 66. | Cantor's Giant Softshell | Pelochelys cantorii | Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Papua New Guinea, Philippines, Thailand, Vietnam |
| 67. | Carbonell's Wall Lizard | Podarcis carbonelli | Portugal, Spain |
| 68. | Carpetane Rock Lizard | Iberolacerta cyreni | Spain |
| 69. | Carvalho's Slider | Trachemys adiutrix | Brazil |
| 70. | Cat Island Turtle | Trachemys terrapen | Cat Island - West Indies (Bahamas) |
| 71. | Caucasian Viper | Vipera kaznakovi | Georgia (Eurasia), Russia, Turkey |
| 72. | Cayman Island Ground Iguana | Cyclura lewisi | Caymans |
| 73. | Celebes Tortoise | Indotestudo forstenii | Indonesia |
| 74. | Central American River Turtle | Dermatemys mawii | Belize, Guatemala, Mexico |
| 75. | Ceron's Glass Lizard | Ophisaurus ceroni | Mexico |
| 76. | Chaco Side-necked Turtle | Acanthochelys pallidipectoris | Argentina, Paraguay |
| 77. | Chalcides simonyi | Chalcides simonyi | Spain |
| 78. | Chaney's Spiny Lizard | Sceloporus chaneyi | Mexico |
| 79. | Chiapan Pigmy Anole | Anolis pygmaeus | Mexico |
| 80. | Chinese Alligator | Alligator sinensis | China |
| 81. | Chinese Broad-headed Pond Turtle | Chinemys megalocephala | China |
| 82. | Chinese Stripe-necked Turtle | Ocadia sinensis | China, Taiwan, Vietnam |
| 83. | Chinese Three-keeled Pond Turtle | Chinemys reevesii | China, Japan, Taiwan |
| 84. | Chinese Three-striped Box Turtle | Cuora trifasciata | China, Laos, Vietnam |
| 85. | Chiszar's Arboreal Alligator Lizard | Abronia chiszari | Mexico |
| 86. | Clarion Island Whip Snake | Masticophis anthonyi | Mexico |
| 87. | Coachella Valley Fringe-toed Lizard | Uma inornata | California |
| 88. | Coahuila Collared Lizard | Crotaphytus antiquus | Mexico |
| 89. | Cochin Forest Cane Turtle | Vijayachelys silvatica | India |
| 90. | Colorado Checkered Whiptail | Aspidoscelis neotesselata | Colorado |
| 91. | Cope's Mountain Meadow Snake | Adelophis copei | Mexico |
| 92. | Crowned River Turtle | Hardella thurjii | Bangladesh, India, Nepal, Pakistan |
| 93. | Cuatro Cienegas Slider | Trachemys taylori | Mexico |
| 94. | Cuatro Cienegas Softshell | Apalone ater | Mexico |
| 95. | Cuatro Cienegas Softshell Turtle | Trionyx ater | Mexico |
| 96. | Cuban Crocodile | Crocodylus rhombifer | Cuba |
| 97. | Culebra Island Giant Anole | Anolis roosevelti | USA (Puerto Rico - Culebra Island) |
| 98. | Cyclades Blunt-nosed Viper | Macrovipera schweizeri | Greece |
| 99. | Cyprus Whip Snake | Hierophis cypriensis | Cyprus |
| 100. | Cyrtopodion amictopholis | Cyrtopodion amictopholis | Lebanon, Syria |
| 101. | Dahl's Toad-headed Turtle | Phrynops dahli | Colombia |
| 102. | Darevsky's Viper | Vipera darevskii | Armenia, Turkey |
| 103. | Dary's Burrowing Snake | Adelphicos daryi | Guatemala |
| 104. | Desert Monitor | Varanus griseus | Asia, Africa, and the Middle East |
| 105. | Desert Viper | Daboia deserti | Algeria, Libya, Tunisia |
| 106. | Dixon's Ground Snake | Liophis atraventer | Brazil |
| 107. | Doumergue's Fringe-fingered Lizard | Acanthodactylus spinicauda | Algeria, Morocco |
| 108. | Doumergue's Skink | Chalcides parallelus | Algeria, Morocco, Spain |
| 109. | Dumeril's Boa | Acrantophis dumerili | Madagascar |
| 110. | Dwarf Bronze Gecko | Ailuronyx tachyscopaeus | Indian Ocean (Seychelles) |
| 111. | Dwarf Crocodile | Osteolaemus tetraspis | West Africa and the Congo R. Drainage |
| 112. | Ebner's Skink | Chalcides ebneri | Morocco |
| 113. | Egyptian Tortoise | Testudo kleinmanni | Egypt, Libya |
| 114. | Elongated Tortoise | Indotestudo elongata | Bangladesh, Cambodia, India, Laos, Malaysia, Myanmar, Nepal, Thailand, Vietnam |
| 115. | Euphrates Softshell Turtle | Rafetus euphraticus | Iran, Iraq, Syria, Turkey |
| 116. | European Leaf-toed Gecko | Euleptes europaea | France, Italy, Tunisia |
| 117. | False Smooth Snake | Macroprotodon brevis | Morocco, Portugal, Spain |
| 118. | Fiji Crested Iguana | Brachylophus vitiensis | Fiji |
| 119. | Fijji Banded Iguana | Brachylophus fasciatus | Fiji, Tonga |
| 120. | Five-keeled Spiny-tailed Iguana | Ctenosaura quinquecariniata | Costa Rica, Nicaragua |
| 121. | Flat-tailed Tortoise | Pyxis planicauda | Madagascar |
| 122. | Flathead Knob-Scaled Lizard | Xenosaurus platyceps | Mexico |
| 123. | Four-eyed Turtle | Sacalia quadriocellata | China, Laos, Vietnam |
| 124. | Fraas' Lizard | Lacerta fraasii | Lebanon |
| 125. | Fringe-toed Sand Lizard | Uma exsul | Mexico |
| 126. | Galapagos Marine Iguana | Amblyrhynchus cristatus | Ecuador (Galapagos Islands) |
| 127. | Galapagos Tortoise | Geochelone elephantopus | Ecuador (Galapagos Islands) |
| 128. | Gavial | Gavialis gangeticus | Bangladesh, Burma, India, Nepal, Pakistan |
| 129. | Geometric Tortoise | Psammobates geometricus | South Africa |
| 130. | Giant Bronze Gecko | Ailuronyx trachygaster | Indian Ocean (Seychelles) |
| 131. | Giant Hispaniolan Galliwasp | Celestus anelpistus | Dominican Republic, Haiti |
| 132. | Giant Hispaniolan Galliwasp | Celestus warreni | Dominican Republic, Haiti |
| 133. | Giant Hispaniolan Galliwasp | Celestus rozellae | Belize, Guatemala, Honduras, Mexico |
| 134. | Gila Monster | Heloderma suspectum | Mexico, United States |
| 135. | Golden Lancehead | Bothrops insularis | Brazil |
| 136. | Goldman's Bunchgrass Lizard | Sceloporus goldmani | Mexico |
| 137. | Grand Cayman Ground Iguana | Cyclura nubila lewisi | West Indies (Caymans) |
| 138. | Gray-checkered Whiptail | Aspidoscelis dixoni | New Mexico, Texas |
| 139. | Greek Algyroides | Algyroides moreoticus | Greece |
| 140. | Greek Rock Lizard | Lacerta graeca | Greece |
| 141. | Green Psammodromus | Psammodromus microdactylus | Morocco |
| 142. | Green Sea Turtle  | Chelonia mydas | Florida, Mexico (nesting populations), temperate seas and oceans |
| 143. | Guatemalan Spiny-tailed Iguana | Ctenosaura palearis | Guatemala |
| 144. | Hardy's Hooknose Snake | Ficimia hardyi | Mexico |
| 145. | Hawksbill Sea Turtle | Eretmochelys imbricata | Tropical seas |
| 146. | Herrera's Alligator Lizard | Barisia herrerae | Mexico |
| 147. | Herrera's Mud Turtle | Kinosternon herrerai | Mexico |
| 148. | Hidalgo Anole | Anolis naufragus | Mexico |
| 149. | Hispaniolan Ground Iguana | Cyclura ricordi | Dominican Republic, Haiti |
| 150. | Honduran Paleate Spiny-tailed Iguana | Ctenosaura melanosterna | Honduras |
| 151. | Horvath's Rock Lizard | Iberolacerta horvathi | Austria, Croatia, Germany, Italy, Slovenia |
| 152. | Iberian Emerald Lizard | Lacerta schreiberi | Portugal, Spain |
| 153. | Inagua Island Turtle | Trachemys stejnegeri malonei | West Indies (Bahamas - Great Inagua Island) |
| 154. | Indian Python | Python molurus molurus | India, Sri Lanka |
| 155. | Indian Sawback Turtle | Kachuga tecta tecta | India |
| 156. | Indian Softshell Turtle | Trionyx gangeticus | India, Pakistan |
| 157. | Indochinese Box Turtle | Cuora galbinifrons | China, Laos, Vietnam |
| 158. | Jagged-shelled Turtle | Pyxidea mouhotii | China, India, Laos, Myanmar, Vietnam |
| 159. | Jamaican Boa | Epicrates subflavus | Jamaica |
| 160. | Jamaican Iguana | Cyclura collei | West Indies (Jamaica) |
| 161. | Kemp's Ridley Sea Turtle | Lepidochelys kempii | Tropical and temperate seas in Atlantic Basin, incl. Gulf of Mexico |
| 162. | Kikuzato's Brook Snake | Opisthotropis kikuzatoi | Japan |
| 163. | Kirtland's Snake | Clonophis kirtlandii | Illinois, Indiana, Kentucky, Michigan, Ohio |
| 164. | Komodo Island Monitor | Varanus komodoensis | Indonesia (Komodo, Rintja, Padar, and western Flores Island) |
| 165. | Kuroiwa's Ground Gecko | Goniurosaurus kuroiwae | Japan |
| 166. | La Gomera Giant Lizard | Gallotia bravoana | Spain |
| 167. | La Palma Giant Lizard | Gallotia auaritae | Spain (Canary Islands) |
| 168. | Lacepede's Ground Snake | Liophis cursor | Martinique - West Indies |
| 169. | Lacerta clarkorum | Lacerta clarkorum | Georgia, Turkey |
| 170. | Lacerta kulzeri | Lacerta kulzeri | Jordan, Lebanon, Syria |
| 171. | Lanza's Skink | Chalcides lanzai | Morocco |
| 172. | Lar Valley Viper | Vipera latifii | Iran |
| 173. | Leaf-nosed Lizard | Ceratophora tennentii | Sri Lanka |
| 174. | Leatherback Sea Turtle | Dermochelys coriacea | Tropical, temperate, and subpolar seas |
| 175. | Lebanon Viper | Montivipera bornmuelleri | Lebanon, Syria |
| 176. | Leeward Island Racer | Alsophis rijersmai | Anguilla, Netherlands Antilles, Saint Barthelemy, Saint Martin (French area) |
| 177. | Leopard Fringe-fingered Lizard | Acanthodactylus pardalis | Egypt, Libya |
| 178. | Lilford's Wall Lizard | Podarcis lilfordi | Spain |
| 179. | Liolaemus huacahuasicus | Liolaemus huacahuasicus | Argentina |
| 180. | Liolaemus lutzae | Liolaemus lutzae | Brazil |
| 181. | Liolaemus occipitalis | Liolaemus occipitalis | Brazil |
| 182. | Liolaemus rabinoi | Liolaemus rabinoi | Argentina |
| 183. | Lipetz's Tropical Night Lizard | Lepidophyma lipetzi | Mexico |
| 184. | Loggerhead Sea Turtle | Caretta caretta | Australia, Central and South America, Europe, Africa, Asia, and North America, Middle East, Oceanic |
| 185. | Long-legged Worm-skink | Anomalopus mackayi | Australia |
| 186. | Louisiana Pine Snake | Pituophis ruthveni | Louisiana, Texas |
| 187. | Madagascar Big-headed Turtle | Erymnochelys madagascariensis | Madagascar |
| 188. | Madagascar Boa | Acrantophis madagascariensis | Madagascar |
| 189. | Madagascar Day Gecko | Phelsuma antanosy | Madagascar |
| 190. | Madagascar Radiated Tortoise | Geochelone radiata | Malagasy Republic (Madagascar) |
| 191. | Marcella's Graceful Brown Snake | Rhadinaea marcellae | Mexico |
| 192. | Maria Island Ground Lizard | Cnemidophorus vanzoi | West Indies (St. Lucia - Maria Islands) |
| 193. | Maria Island Snake | Liophis ornatus | West Indies (St. Lucia - Maria Islands) |
| 194. | Mary River Turtle | Elusor macrurus | Australia (Queensland) |
| 195. | Matuda's Arboreal Alligator Lizard | Abronia matudai | Guatemala, Mexico |
| 196. | McCord's Box Turtle | Cuora mccordi | China |
| 197. | Meadow Viper | Vipera ursinii | Europe |
| 198. | Methuen's Dwarf Gecko | Lygodactylus methueni | South Africa |
| 199. | Mexican Black-tailed Pit Viper | Ophryacus melanurus | Mexico |
| 200. | Mixtecan Arboreal Alligator Lizard | Abronia mixteca | Mexico |
| 201. | Mona Blind Snake | Typhlops monensis | Puerto Rico |
| 202. | Monito Gecko | Sphaerodactylus micropithecus | Puerto Rico |
| 203. | Monte Cristo Arboreal Alligator Lizard | Abronia montecristoi | El Salvador |
| 204. | Montserrat Galliwasp | Diploglossus montisserrati | Montserrat |
| 205. | Moorish Viper | Daboia mauritanica | Algeria, Morocco, Tunisia, Western Sahara |
| 206. | Morelet's Crocodile | Crocodylus moreletii | Belize, Guatemala, Mexico |
| 207. | Moroccan Three-toed Skink | Chalcides pseudostriatus | Morocco, Spain |
| 208. | Moss-backed Turtle | Mauremys mutica | China, Japan, Taiwan, Vietnam |
| 209. | Mount Bulgar Viper | Vipera bulgardaghica | Turkey |
| 210. | Mount Cooper Striped Lerista | Lerista vittata | Australia |
| 211. | Mount Zempoaltepec Alligator Lizard | Abronia fuscolabialis | Mexico |
| 212. | Mountain Skink | Chalcides montanus | Morocco |
| 213. | Mountain Viper | Vipera albizona | Turkey |
| 214. | Mugger Crocodile | Crocodylus palustris | Bangladesh, India, Iraq, Pakistan, Sri Lanka |
| 215. | Namoi River Snapping Turtle | Elseya belli | Australia (New South Wales, Queensland) |
| 216. | Narrow-headed Softshell Turtle | Chitra indica | Bangladesh, India, Myanmar, Pakistan |
| 217. | Negev Tortoise | Testudo werneri | Egypt, Israel |
| 218. | Newman's Knob-Scaled Lizard | Xenosaurus newmanorum | Mexico |
| 219. | Northern Arboreal Alligator Lizard | Abronia taeniata | Mexico |
| 220. | Northern Chiapas Anole | Anolis hobartsmithi | Mexico |
| 221. | Nuevo Leon Graceful Brown Snake | Rhadinaea montana | Mexico |
| 222. | Oaxacan Arboreal Alligator Lizard | Abronia oaxacae | Mexico |
| 223. | Oaxacan Spiny-tailed Iguana | Ctenosaura oaxacana | Mexico (Oaxaca) |
| 224. | Olive Ridley Sea Turtle | Lepidochelys olivacea | Circumglobal in tropical and temperate seas, Mexico (nesting populations) |
| 225. | Orinoco Crocodile | Crocodylus intermedius | South America (Orinoco R. Basin) |
| 226. | Pacific Pond Turtle | Actinemys marmorata | California, Mexico, Oregon, Washington |
| 227. | Painted Batagur | Callagur borneoensis | Brunei Darussalam, Indonesia, Malaysia, Thailand |
| 228. | Pan's Box Turtle | Cuora pani | China |
| 229. | Paraguanan Ground Gecko | Lepidoblepharis montecanoensis | Venezuela |
| 230. | Peacock Softshell Turtle | Trionyx hurum | Bangladesh, India |
| 231. | Peloponnese Slow Worm | Anguis cephalonnica | Greece |
| 232. | Pena de Francia Rock Lizard | Iberolacerta martinezricai | Spain |
| 233. | Pernatty Knob-tail | Nephrurus deleani | Australia |
| 234. | Philippine Crocodile | Crocodylus mindorensis | Philippines |
| 235. | Philippine Pond Turtle | Siebenrockiella leytensis | Philippines |
| 236. | Philochortus zolii | Philochortus zolii | Egypt, Libya |
| 237. | Plymouth Red-bellied Turtle | Pseudemys rubriventris bangsi | Massachusetts |
| 238. | Potosi Centipede Snake | Tantilla shawi | Mexico |
| 239. | Pritchard's Snake-necked Turtle | Chelodina pritchardi | Papua New Guinea |
| 240. | Puerto Rican Boa | Epicrates inornatus | Puerto Rico |
| 241. | Pygmy Alligator Lizard | Gerrhonotus parvus | Mexico |
| 242. | Pyrenean Rock Lizard | Iberolacerta bonnali | France, Spain |
| 243. | Queretaran Desert Lizard | Sceloporus exsul | Mexico |
| 244. | Ramsay's Python | Aspidites ramsayi | Australia |
| 245. | Red-bellied Earth Runner | Chersodromus rubriventris | Mexico |
| 246. | Red-bellied Racer | Alsophis rufiventris | Netherlands Antilles |
| 247. | Red-necked Pond Turtle | Chinemys nigricans | China |
| 248. | Rim Rock Crowned Snake | Tantilla oolitica | Florida |
| 249. | Ringed Sawback | Graptemys oculifera | Louisiana, Mississippi |
| 250. | Rio Magdalena River Turtle | Podocnemis lewyana | Colombia |
| 251. | River Terrapin | Batagur baska | Bangladesh, Burma, India, Indonesia, Malaysia |
| 252. | Roatan Spiny-tailed Iguana | Ctenosaura oedirhina | Honduras |
| 253. | Rodeck's Whiptail | Aspidoscelis rodecki | Mexico |
| 254. | Rodrigues Day Gecko | Phelsuma edwardnewtoni | Indian Ocean (Mauritius) |
| 255. | Roque Chico de Salmor Giant Lizard | Gallotia simonyi | Spain (Canary Islands) |
| 256. | Roti Island Snake-necked Turtle | Chelodina mccordi | Indonesia |
| 257. | Roughneck Alligator Lizard | Barisia rudicollis | Mexico |
| 258. | Round Island Burrowing Boa | Bolyeria multocarinata | Indian Ocean (Mauritius) |
| 259. | Round Island Casarea Boa | Casarea dussumieri | Indian Ocean (Mauritius) |
| 260. | Round Island Day Gecko | Phelsuma guentheri | Indian Ocean (Mauritius) |
| 261. | Ruthvens Kingsnake | Lampropeltis ruthveni | Mexico |
| 262. | Ryukyu Black-breasted Leaf Turtle | Geoemyda japonica | Japan |
| 263. | Saltwater Crocodile | Crocodylus porosus | Islands of the West Pacific Ocean, Southeast Asia |
| 264. | San Esteban Island Chuckwalla | Sauromalus varius | Mexico |
| 265. | San Francisco Garter Snake | Thamnophis sirtalis tetrataenia | California |
| 266. | Santa Catalina Island Rattlesnake | Crotalus catalinensis | Mexico (Baja California Sur) |
| 267. | Savigny's Fringe-fingered Lizard | Acanthodactylus savignyi | Algeria |
| 268. | Schreiber's Fringe-fingered Lizard | Acanthodactylus schreiberi | Cyprus, Israel, Lebanon, Turkey |
| 269. | Setaro's Dwarf Chameleon | Bradypodion setaroi | South Africa |
| 270. | Seychelles House Snake | Lamprophis geometricus | Indian Ocean (Seychelles) |
| 271. | Seychelles Wolf Snake | Lycognathophis seychellensis | Indian Ocean (Seychelles) |
| 272. | Shanghai Soft-shell Turtle | Rafetus swinhoei | China |
| 273. | Short-necked Turtle | Pseudemydura umbrina | Australia |
| 274. | Siamese Crocodile | Crocodylus siamensis | Malay Peninsula, Southeast Asia |
| 275. | Sierra Juarez Alligator Lizard | Mesaspis juarezi | Mexico |
| 276. | Smith's Dwarf Chamaeleon | Bradypodion taeniabronchum | South Africa |
| 277. | South American Red-lined Turtle | Trachemys scripta callirostris | Colombia, Venezuela |
| 278. | Southern New Guinea Snapping Turtle | Elseya branderhorstii | Indonesia |
| 279. | Spanish Algyroides | Algyroides marchi | Spain |
| 280. | Spider Tortoise | Pyxis arachnoides | Madagascar |
| 281. | Spineless Forest Lizard | Calotes liocephalus | Sri Lanka |
| 282. | Spiny Terrapin | Heosemys spinosa | Brunei Darussalam, Indonesia, Malaysia, Philippines, Singapore, Thailand |
| 283. | Spot-tailed Earless Lizard | Holbrookia lacerata | Mexico, Texas |
| 284. | Spotted Pond Turtle | Geoclemys hamiltonii | North India, Pakistan |
| 285. | St. Croix Ground Lizard | Ameiva polops | Virgin Islands |
| 286. | St. Vincent Blacksnake | Chironius vincenti | Saint Vincent and the Grenadines |
| 287. | Striped Narrow-headed Softshell Turtle | Chitra chitra | Thailand |
| 288. | Sulawesi Forest Turtle | Leucocephalon yuwonoi | Indonesia |
| 289. | Tamaulipan Montane Garter Snake | Thamnophis mendax | Mexico |
| 290. | Tancitaran Dusky Rattlesnake | Crotalus pusillus | Mexico |
| 291. | Tartaruga | Podocnemis expansa | South America (Orinoco R. and Amazon R. basins) |
| 292. | Telescopus hoogstraali | Telescopus hoogstraali | Egypt, Israel, Jordan, Palestinian Territory, Occupied |
| 293. | Tenerife Speckled Lizard | Gallotia intermedia | Spain |
| 294. | Terrestrial Arboreal Alligator Lizard | Abronia graminea | Mexico |
| 295. | Three-keeled Asian Turtle | Melanochelys tricarinata | Central India to Bangladesh and Burma |
| 296. | Three-striped Roof Turtle | Kachuga dhongoka | Bangladesh, India |
| 297. | Tiger Chameleon | Calumma tigris | Indian Ocean (Seychelles) |
| 298. | Todos Santos Island Kingsnake | Lampropeltis herrerae | Mexico |
| 299. | Tomistoma | Tomistoma schlegelii | Indonesia, Malaysia |
| 300. | Tracaja | Podocnemis unifilis | South America (Orinoco R. and Amazon R. basins) |
| 301. | Tropical Forest Snake | Calamodontophis sp. nov. | Brazil |
| 302. | Tropical Forest Snake | Calamodontophis paucidens | Brazil, Uruguay |
| 303. | Tuatara | Sphenodon punctatus | New Zealand |
| 304. | Twin-spotted Tolucan Ground Snake | Conopsis amphisticha | Mexico |
| 305. | Two-fingered Skink | Chalcides mauritanicus | Algeria, Morocco |
| 306. | Urosaurus auriculatus | Urosaurus auriculatus | Mexico |
| 307. | Utila Spiny-tailed Iguana | Ctenosaura bakeri | Honduras |
| 308. | Vesey-fitzgerald's Burrowing Skink | Janetaescincus veseyfitzgeraldi | Indian Ocean (Seychelles) |
| 309. | Virgin Islands Tree Boa | Epicrates monensis granti | Puerto Rico, Virgin Islands (British and US) |
| 310. | Wagner's Viper | Vipera wagneri | Turkey |
| 311. | Watling Island Iguana | Cyclura rileyi | West Indies (Bahamas) |
| 312. | Wattle-necked Softshell Turtle | Palea steindachneri | China, Hawaii, Mauritius, Vietnam |
| 313. | Wiegmann's Tree Lizard | Anisolepis undulatus | Argentina, Brazil, Uruguay |
| 314. | Woodbush Legless Skink | Acontophiops lineatus | South Africa |
| 315. | Yarrow's Blue-spotted Spiny Lizard | Sceloporus cyanostictus | Mexico |
| 316. | Yellow Blotched Sawback | Graptemys flavimaculata | Mississippi |
| 317. | Yellow Monitor | Varanus flavescens | West Pakistan through India to Bangladesh |
| 318. | Yellow-headed Box Turtle | Cuora aurocapitata | China |
| 319. | Yellow-headed Temple Turtle | Heosemys annandalii | Cambodia, Malaysia, Thailand, Vietnam |
| 320. | Yellow-Lined Centipede Snake | Tantilla flavilineata | Mexico |
| 321. | Yellow-margined Box Turtle | Cuora flavomarginata | China, Japan, Taiwan |
| 322. | Yellowback Spiny-tailed Iguana | Ctenosaura flavidorsalis | El Salvador, Guatemala, Honduras |
| 323. | Zhou's Box Turtle | Cuora zhoui | China |
