As of September 2016, the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

(IUCN) lists 196 critically endangered reptile species, including 17 which are tagged as ''possibly extinct''. 3.8% of all evaluated reptile species are listed as critically endangered. The IUCN also lists 12 reptile subspecies as critically endangered. Of the subpopulations of reptiles evaluated by the IUCN, ten species subpopulations have been assessed as critically endangered. Additionally 910 reptile species (18% of those evaluated) are listed as '' data deficient'', meaning there is not sufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of ''data deficient'' indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed." This is a complete list of critically endangered reptile species and subspecies evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such. Species and subspecies which have critically endangered subpopulations (or stocks) are indicated.

Turtles and tortoises

There are 40 species, four subspecies, and three subpopulations of turtle assessed as critically endangered.

Cheloniids

Species * Hawksbill sea turtle (''Eretmochelys imbricata'') * Atlantic ridley sea turtle (''Lepidochelys kempii'') Subpopulations *

Loggerhead sea turtle The loggerhead sea turtle (''Caretta caretta'') is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae. The average loggerhead measures around in carapace length when fully ...

(''Caretta caretta'') (3 subpopulations)

Tortoises Tortoises () are reptiles of the family Testudinidae of the order Testudines (Latin: ''tortoise''). Like other turtles, tortoises have a turtle shell, shell to protect from predation and other threats. The shell in tortoises is generally hard, ...

Species Subspecies *'' Testudo graeca nikolskii''

Geoemydids

Trionychids

Species Subspecies * Black spiny softshell turtle (''Apalone spinifera atra'') Subpopulations *

African softshell turtle The African softshell turtle or Nile softshell turtle (''Trionyx triunguis'') is a large species of turtle from fresh-water and brackish habitats in Africa (larger parts of East, West and Middle Africa) and the Near East (Israel, Lebanon, Syria ...

(''Trionyx triunguis'') (1 subpopulation)

Other turtles

Species Subspecies * Seychelles yellow-bellied mud turtle (''Pelusios castanoides intergularis'') * Seychelles black mud turtle (''Pelusios subniger parietalis'') Subpopulations *

Leatherback sea turtle The leatherback sea turtle (''Dermochelys coriacea''), sometimes called the lute turtle or leathery turtle or simply the luth, is the largest of all living turtles and the heaviest non-crocodilian reptile, reaching lengths of up to and weight ...

(''Dermochelys coriacea'') (4 subpopulations)

Crocodilia Crocodilia (or Crocodylia, both ) is an order of mostly large, predatory, semiaquatic reptiles, known as crocodilians. They first appeared 95 million years ago in the Late Cretaceous period ( Cenomanian stage) and are the closest living ...
species

Lizards

There are 110 species, four subspecies, and one subpopulation of lizard assessed as critically endangered.

Iguanids

Species Subspecies Subpopulations * Black-chested spiny-tailed iguana (''Ctenosaura melanosterna'') (2 subpopulations)

Anguids

Chameleons Chameleons or chamaeleons (family Chamaeleonidae) are a distinctive and highly specialized clade of Old World lizards with 202 species described as of June 2015. The members of this family are best known for their distinct range of colors, bein ...

Gekkonids

Wall lizards

Skinks Skinks are lizards belonging to the family Scincidae, a family in the infraorder Scincomorpha. With more than 1,500 described species across 100 different taxonomic genera, the family Scincidae is one of the most diverse families of lizards. Sk ...

Other lizard species

Snakes

Species Subspecies

References

*Reptiles Critically endangered reptiles Critically endangered reptiles Reptile conservation {{bots, deny=BG19bot,Yobot