There are 151 reptiles that start with the letter W, from Wagler’s Pit Viper to Wulfing’s Chameleon. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the reptiles belongs to
Habitat: The places or type of weather the reptiles lives in
Scientific name: The designation that scientists use to catalog the species
Name: Wagler's Pit Viper
Order: Squamata
Habitat: Tropical forests of Southeast Asia
Scientific name: Tropidolaemus wagleri
Name: Waigeo Snake-Necked Turtle
Order: Testudines
Habitat: Tropical rainforests of Indonesia
Scientific name: Chelodina siebenrocki
Name: Waikaki Gecko
Order: Squamata
Habitat: Tropical forests of Fiji
Scientific name: Nactus waikaiensis
Name: Waikato Striped Skink
Order: Squamata
Habitat: New Zealand
Scientific name: Oligosoma striatum
Name: Waikiki Gecko
Order: Squamata
Habitat: Hawaii
Scientific name: Perochirus strophurus
Name: Waikiki Snake
Order: Squamata
Habitat: Endemic to the Hawaiian Islands
Scientific name: Ramphotyphlops stejnegeri
Name: Wakatobi Emerald Tree Skink
Order: Squamata
Habitat: Wakatobi Islands of Indonesia
Scientific name: Lamprolepis smaragdina waigeoensis
Name: Wakatobi Forest Gecko
Order: Squamata
Habitat: Indonesia
Scientific name: Gekko oskarsoekarni
Name: Wakatobi Spiny-Tailed Gecko
Order: Squamata
Habitat: Endemic to the Wakatobi Islands of Indonesia
Scientific name: Kimberleyathis wakatobiensis
Name: Walachian Meadow Viper
Order: Squamata
Habitat: Endemic to Romania and Serbia
Scientific name: Vipera graeca
Name: Walden's Snake
Order: Squamata
Habitat: Mexico
Scientific name: Coniophanes waldenae
Name: Wall Gecko
Order: Squamata
Habitat: Rocky areas and walls in Mediterranean region
Scientific name: Tarentola mauritanica
Name: Wall Lizard
Order: Squamata
Habitat: Europe
Scientific name: Podarcis muralis
Name: Wallace's Banded Gecko
Order: Squamata
Habitat: Maluku Islands of Indonesia
Scientific name: Gekko wallacei
Name: Walleye Gecko
Order: Squamata
Habitat: Southeast Asia
Scientific name: Gekko vertebralis
Name: Wallum Skink
Order: Squamata
Habitat: Coastal heathlands and woodlands of eastern Australia
Scientific name: Lampropholis walloona
Name: Walnut Whiptail
Order: Squamata
Habitat: Southwestern United States
Scientific name: Cnemidophorus auratrix
Name: Waltl's Newt
Order: Caudata
Habitat: Iberian Peninsula
Scientific name: Pleurodeles waltl
Name: Wandering Garter Snake
Order: Squamata
Habitat: Grasslands and forests in western North America
Scientific name: Thamnophis elegans
Name: Wangi Wangi Skink
Order: Squamata
Habitat: Indonesia
Scientific name: Lipinia wangi
Name: Wapiti Snake
Order: Squamata
Habitat: Found in northern South America
Scientific name: Anilius scytale
Name: Warm Spring Glass Lizard
Order: Squamata
Habitat: Southwestern United States
Scientific name: Ophisaurus attenuatus longicaudus
Name: Warner's Gecko
Order: Squamata
Habitat: Vietnam
Scientific name: Gekko warneri
Name: Warren's Snake
Order: Squamata
Habitat: Mexico
Scientific name: Tantilla warneri
Name: Wart Snake
Order: Squamata
Habitat: Freshwater and coastal habitats in Southeast Asia
Scientific name: Acrochordus javanicus
Name: Wart-Headed Gecko
Order: Squamata
Habitat: Tropical forests of Central and South America
Scientific name: Thecadactylus rapicauda
Name: Wart-Headed Tree Frog
Order: Anura
Habitat: Southeast Asia
Scientific name: Theloderma asperum
Name: Wart-Headed Viper
Order: Squamata
Habitat: Southeast Asia
Scientific name: Tropidolaemus wagleri
Name: Water Anole
Order: Squamata
Habitat: Freshwater habitats in Central America
Scientific name: Anolis aquaticus
Name: Water Dragon
Order: Squamata
Habitat: Freshwater habitats in Southeast Asia
Scientific name: Physignathus cocincinus
Name: Water Moccasin
Order: Squamata
Habitat: Wetlands and waterways in the southeastern United States
Scientific name: Agkistrodon piscivorus
Name: Water Monitor
Order: Squamata
Habitat: Wetlands and tropical forests in Southeast Asia
Scientific name: Varanus salvator
Name: Water Skink
Order: Squamata
Habitat: Australia
Scientific name: Eulamprus quoyii
Name: Water Vole Snake
Order: Squamata
Habitat: Europe
Scientific name: Natrix maura
Name: Waterfall Gecko
Order: Squamata
Habitat: Waterfalls and wet rock walls in India
Scientific name: Cnemaspis wynadensis
Name: Waterford Lizard
Order: Squamata
Habitat: Found in northwestern Mexico
Scientific name: Sceloporus waterfallii
Name: Watkins' Dwarf Gecko
Order: Squamata
Habitat: Puerto Rico
Scientific name: Sphaerodactylus watkinsii
Name: Watusi Cobra
Order: Squamata
Habitat: Grasslands and savannas in East Africa
Scientific name: Naja annulifera
Name: Webb's Gecko
Order: Squamata
Habitat: Found in parts of the Middle East
Scientific name: Ptyodactylus watsoni
Name: Weddell Sea Skink
Order: Squamata
Habitat: Endemic to Antarctica
Scientific name: Leiolopisma weddellii
Name: Wedel's Wart Snake
Order: Squamata
Habitat: Indonesia
Scientific name: Acrochordus wedeli
Name: Wedge-Snouted Skink
Order: Squamata
Habitat: Tropical forests of the Philippines
Scientific name: Brachymeles boulengeri
Name: Weigold's Gecko
Order: Squamata
Habitat: Tropical forests in Southeast Asia
Scientific name: Hemidactylus wegneri
Name: Weimar's Gecko
Order: Squamata
Habitat: Endemic to parts of Central Africa
Scientific name: Hemidactylus weimaranis
Name: West African Black Cobra
Order: Squamata
Habitat: West Africa
Scientific name: Naja melanoleuca
Name: West African Chameleon
Order: Squamata
Habitat: West Africa
Scientific name: Chamaeleo gracilis
Name: West African Collared Lizard
Order: Squamata
Habitat: West Africa
Scientific name: Platysaurus guttatus
Name: West African Crocodile
Order: Crocodilia
Habitat: Found in western and central Africa
Scientific name: Crocodylus suchus
Name: West African Dwarf Crocodile
Order: Crocodilia
Habitat: West Africa
Scientific name: Osteolaemus tetraspis
Name: West African House Snake
Order: Squamata
Habitat: West Africa
Scientific name: Lamprophis fuliginosus
Name: West African Kob Snake
Order: Squamata
Habitat: West Africa
Scientific name: Buhoma dcmmheri
Name: West African Leaf-Toed Gecko
Order: Squamata
Habitat: West Africa
Scientific name: Hemidactylus richardi
Name: West African Mud Turtle
Order: Testudines
Habitat: Endemic to western Africa
Scientific name: Pelusios castaneus
Name: West African Racer
Order: Squamata
Habitat: West Africa
Scientific name: Platyceps neumayeri
Name: West African Rock Python
Order: Squamata
Habitat: West Africa
Scientific name: Python sebae
Name: West African Slender-Snouted Crocodile
Order: Crocodilia
Habitat: Found in western and central Africa
Scientific name: Mecistops cataphractus
Name: West African Spiny-Tailed Lizard
Order: Squamata
Habitat: West Africa
Scientific name: Uromastyx geyri
Name: West African Spiral-Horned Chameleon
Order: Squamata
Habitat: West Africa
Scientific name: Trioceros montium
Name: West African Spitting Cobra
Order: Squamata
Habitat: West Africa
Scientific name: Naja nigricollis
Name: West African Toad-Headed Agama
Order: Squamata
Habitat: West Africa
Scientific name: Xenagama batillifera
Name: West Coast Legless Lizard
Order: Squamata
Habitat: United States
Scientific name: Anniella pulchra
Name: Western Banded Gecko
Order: Squamata
Habitat: United States
Scientific name: Coleonyx variegatus
Name: Western Beaked Gecko
Order: Squamata
Habitat: Australia
Scientific name: Rhynchoedura ornata
Name: Western Blackhead Snake
Order: Squamata
Habitat: Found in southwestern North America
Scientific name: Tantilla planiceps
Name: Western Blind Snake
Order: Squamata
Habitat: Deserts and dry areas in western North America
Scientific name: Leptotyphlops humilis
Name: Western Blue-Tongued Skink
Order: Squamata
Habitat: Endemic to southwestern Australia
Scientific name: Tiliqua occipitalis
Name: Western Box Turtle
Order: Testudines
Habitat: Found in central and western North America
Scientific name: Terrapene ornata
Name: Western Coachwhip
Order: Squamata
Habitat: Found in southwestern North America
Scientific name: Masticophis flagellum
Name: Western Diamond-Backed Rattlesnake
Order: Squamata
Habitat: Southwestern United States
Scientific name: Crotalus atrox
Name: Western Diamondback Rattlesnake
Order: Squamata
Habitat: Deserts and grasslands in southwestern North America
Scientific name: Crotalus atrox
Name: Western Fence Lizard
Order: Squamata
Habitat: United States
Scientific name: Sceloporus occidentalis
Name: Western Frog-Eyed Gecko
Order: Squamata
Habitat: Central Asia
Scientific name: Teratoscincus scincus
Name: Western Garter Snake
Order: Squamata
Habitat: Found in western North America
Scientific name: Thamnophis elegans
Name: Western Green Lizard
Order: Squamata
Habitat: Europe
Scientific name: Lacerta bilineata
Name: Western Green Mamba
Order: Squamata
Habitat: West Africa
Scientific name: Dendroaspis viridis
Name: Western Ground Snake
Order: Squamata
Habitat: Deserts and dry grasslands in western North America
Scientific name: Sonora semiannulata
Name: Western Hog-Nosed Snake
Order: Squamata
Habitat: United States
Scientific name: Heterodon nasicus
Name: Western Hognose Snake
Order: Squamata
Habitat: Prairies and deserts in western North America
Scientific name: Heterodon nasicus
Name: Western Hook-Nosed Snake
Order: Squamata
Habitat: United States
Scientific name: Gyalopion canum
Name: Western Painted Turtle
Order: Testudines
Habitat: Found in western North America
Scientific name: Chrysemys picta bellii
Name: Western Pond Turtle
Order: Testudines
Habitat: Found in western North America
Scientific name: Actinemys marmorata
Name: Western Pygmy Rattlesnake
Order: Squamata
Habitat: Found in southeastern North America
Scientific name: Sistrurus miliarius
Name: Western Ribbon Snake
Order: Squamata
Habitat: United States
Scientific name: Thamnophis proximus
Name: Western Rough Gecko
Order: Squamata
Habitat: Central Asia
Scientific name: Cyrtopodion caspius
Name: Western Sand Boa
Order: Squamata
Habitat: Middle East
Scientific name: Eryx jayakari
Name: Western Skink
Order: Squamata
Habitat: Woodlands and grasslands in western North America
Scientific name: Plestiodon skiltonianus
Name: Western Slender Glass Lizard
Order: Squamata
Habitat: United States
Scientific name: Ophisaurus attenuatus
Name: Western Smooth Snake
Order: Squamata
Habitat: Found in western North America
Scientific name: Contia tenuis
Name: Western Spotted Gecko
Order: Squamata
Habitat: Central Asia
Scientific name: Teratoscincus scincus
Name: Western Spotted Whipsnake
Order: Squamata
Habitat: Western North America
Scientific name: Masticophis taeniatus
Name: Western Swamp Turtle
Order: Testudines
Habitat: Coastal wetlands and rivers in southwest Australia
Scientific name: Emydura macquarii
Name: Western Terrestrial Garter Snake
Order: Squamata
Habitat: Western North America
Scientific name: Thamnophis elegans
Name: Western Three-Toed Amphiuma
Order: Caudata
Habitat: Endemic to Alabama and Mississippi
Scientific name: Amphiuma pholeter
Name: Western Worm Lizard
Order: Squamata
Habitat: South America
Scientific name: Amphisbaena occidentalis
Name: Western Worm Snake
Order: Squamata
Habitat: United States
Scientific name: Carphophis vermis
Name: Wetmore's Four-Eyed Turtle
Order: Testudines
Habitat: Endemic to southern China
Scientific name: Sacalia quadriocellata
Name: Whine Gecko
Order: Squamata
Habitat: Found in parts of Southeast Asia
Scientific name: Cyrtopadion whiteheadi
Name: Whip Snake
Order: Squamata
Habitat: Arid environments in Australia
Scientific name: Demansia psammophis
Name: Whip-Tailed Chameleon
Order: Squamata
Habitat: Madagascar
Scientific name: Brookesia spp.
Name: Whipsnake Racer
Order: Squamata
Habitat: Central and eastern North America
Scientific name: Masticophis flagellum
Name: Whiptail Ameiva
Order: Squamata
Habitat: South America
Scientific name: Ameiva ameiva
Name: Whiptail Lizard
Order: Squamata
Habitat: Deserts and grasslands in southwestern North America
Scientific name: Aspidoscelis uniparens
Name: White Crested Gecko
Order: Squamata
Habitat: New Caledonia
Scientific name: Rhacodactylus ciliatus
Name: White Lipped Island Snake
Order: Squamata
Habitat: Mauritius
Scientific name: Alopecophis chalcodes
Name: White Marsh Snake
Order: Squamata
Habitat: North America
Scientific name: Liodytes alleni
Name: White-Barred Racer
Order: Squamata
Habitat: Found in eastern North America
Scientific name: Coluber constrictor
Name: White-Bellied Grass Skink
Order: Squamata
Habitat: Australia
Scientific name: Saproscincus mustelinus
Name: White-Bellied Skink
Order: Squamata
Habitat: Endemic to Tasmania
Scientific name: Niveoscincus microlepidotus
Name: White-Cheeked Gecko
Order: Squamata
Habitat: Endemic to Madagascar
Scientific name: Paroedura homalorhina
Name: White-Chinned Whip Snake
Order: Squamata
Habitat: India
Scientific name: Ahaetulla perroteti
Name: White-Collared Lizard
Order: Squamata
Habitat: Found in central North America
Scientific name: Crotaphytus collaris
Name: White-Headed Gecko
Order: Squamata
Habitat: Found in parts of South America
Scientific name: Phyllopezus pollicaris
Name: White-Headed Snake
Order: Squamata
Habitat: Australia
Scientific name: Hoplocephalus bitorquatus
Name: White-Lipped Bushmaster
Order: Squamata
Habitat: Tropical forests of South America
Scientific name: Lachesis muta
Name: White-Lipped Island Gecko
Order: Squamata
Habitat: Mauritius
Scientific name: Nactus serpensinsula
Name: White-Lipped Mud Turtle
Order: Testudines
Habitat: Found in Central America
Scientific name: Kinosternon leucostomum
Name: White-Lipped Python
Order: Squamata
Habitat: Tropical forests in Southeast Asia
Scientific name: Bothrochilus boa
Name: White-Lipped Viper
Order: Squamata
Habitat: Southeast Asia
Scientific name: Trimeresurus albolabris
Name: White-Nosed Gecko
Order: Squamata
Habitat: Tropical forests in Africa
Scientific name: Hemidactylus albopunctatus
Name: White-Spotted Gecko
Order: Squamata
Habitat: Philippines
Scientific name: Gekko carusadensis
Name: White-Spotted Leaf-Toed Gecko
Order: Squamata
Habitat: Found in parts of Southeast Asia
Scientific name: Hemiphyllodactylus typus
Name: White-Tailed Anole
Order: Squamata
Habitat: Endemic to Jamaica
Scientific name: Anolis semilineatus
Name: White-Tailed Leaf-Tailed Gecko
Order: Squamata
Habitat: Tropical forests of Madagascar
Scientific name: Uroplatus sameiti
Name: Whitebelly Caiman
Order: Crocodilia
Habitat: South America
Scientific name: Paleosuchus trigonatus
Name: Whitebelly Slider
Order: Testudines
Habitat: Freshwater lakes and rivers in southeastern United States
Scientific name: Trachemys gaigeae
Name: Whitespotted Bamboo Viper
Order: Squamata
Habitat: Southeast Asia
Scientific name: Trimeresurus albolabris
Name: Whitewater Snake
Order: Squamata
Habitat: Found in eastern North America
Scientific name: Nerodia sipedon
Name: Wickham's Skink
Order: Squamata
Habitat: Australia
Scientific name: Lerista wickhami
Name: Wide-Headed Skink
Order: Squamata
Habitat: Grasslands and savannas in Africa
Scientific name: Mabuya macularia
Name: Wied's Gecko
Order: Squamata
Habitat: Found in parts of South America
Scientific name: Homonota wiedii
Name: Wied's Snake
Order: Squamata
Habitat: South America
Scientific name: Leptotyphlops weidii
Name: Wiegmann's Gecko
Order: Squamata
Habitat: Namibia and South Africa
Scientific name: Pachydactylus werneri
Name: Wilcox's Leaf-Toed Gecko
Order: Squamata
Habitat: Mexico
Scientific name: Phyllodactylus wilobesi
Name: Wilkins' Spiny-Tailed Lizard
Order: Squamata
Habitat: Jordan and Saudi Arabia
Scientific name: Uromastyx wilkinsi
Name: Williamson's Swamp Turtle
Order: Testudines
Habitat: Australia
Scientific name: Emydura macquarii williamsi
Name: Wilson's Grayish Plated Lizard
Order: Squamata
Habitat: Southern Africa
Scientific name: Gerrhosaurus validus
Name: Wilson's Snake
Order: Squamata
Habitat: Australia
Scientific name: Parasuta wilsoni
Name: Wilson's Snake-Necked Turtle
Order: Testudines
Habitat: Wetlands in Australia
Scientific name: Chelodina oblonga
Name: Windward Banded Gecko
Order: Squamata
Habitat: Southwestern USA and northwestern Mexico
Scientific name: Coleonyx reticulatus
Name: Woma Dwarf Python
Order: Squamata
Habitat: Australia
Scientific name: Antaresia woma
Name: Woma Python
Order: Squamata
Habitat: Deserts and arid regions of western and central Australia
Scientific name: Aspidites ramsayi
Name: Wonambi Python
Order: Squamata
Habitat: Northern Australia
Scientific name: Liasis oenpelliensis
Name: Wood File Snake
Order: Squamata
Habitat: Southeast Asia
Scientific name: Acrochordus granulatus
Name: Wood Turtle
Order: Testudines
Habitat: Eastern North America
Scientific name: Glyptemys insculpta
Name: Woodhouse's Toad
Order: Anura
Habitat: Central and western North America
Scientific name: Anaxyrus woodhousii
Name: Woodland Snake
Order: Squamata
Habitat: United States
Scientific name: Rhadinaea flavilata
Name: Woolly Snake
Order: Squamata
Habitat: Found in parts of Asia
Scientific name: Orthriophis taeniurus
Name: Worm Lizard
Order: Amphisbaenia
Habitat: Middle East
Scientific name: Diplometopon zarudnyi
Name: Worm Snake
Order: Squamata
Habitat: Found in eastern North America
Scientific name: Carphophis amoenus
Name: Wright's Skink
Order: Squamata
Habitat: New Zealand
Scientific name: Oligosoma wrighti
Name: Wulfing's Chameleon
Order: Squamata
Habitat: Eastern Africa
Scientific name: Trioceros werneri
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Wagler's Pit Viper | Squamata | Tropical forests of Southeast Asia | Tropidolaemus wagleri |
| Waigeo Snake-Necked Turtle | Testudines | Tropical rainforests of Indonesia | Chelodina siebenrocki |
| Waikaki Gecko | Squamata | Tropical forests of Fiji | Nactus waikaiensis |
| Waikato Striped Skink | Squamata | New Zealand | Oligosoma striatum |
| Waikiki Gecko | Squamata | Hawaii | Perochirus strophurus |
| Waikiki Snake | Squamata | Endemic to the Hawaiian Islands | Ramphotyphlops stejnegeri |
| Wakatobi Emerald Tree Skink | Squamata | Wakatobi Islands of Indonesia | Lamprolepis smaragdina waigeoensis |
| Wakatobi Forest Gecko | Squamata | Indonesia | Gekko oskarsoekarni |
| Wakatobi Spiny-Tailed Gecko | Squamata | Endemic to the Wakatobi Islands of Indonesia | Kimberleyathis wakatobiensis |
| Walachian Meadow Viper | Squamata | Endemic to Romania and Serbia | Vipera graeca |
| Walden's Snake | Squamata | Mexico | Coniophanes waldenae |
| Wall Gecko | Squamata | Rocky areas and walls in Mediterranean region | Tarentola mauritanica |
| Wall Lizard | Squamata | Europe | Podarcis muralis |
| Wallace's Banded Gecko | Squamata | Maluku Islands of Indonesia | Gekko wallacei |
| Walleye Gecko | Squamata | Southeast Asia | Gekko vertebralis |
| Wallum Skink | Squamata | Coastal heathlands and woodlands of eastern Australia | Lampropholis walloona |
| Walnut Whiptail | Squamata | Southwestern United States | Cnemidophorus auratrix |
| Waltl's Newt | Caudata | Iberian Peninsula | Pleurodeles waltl |
| Wandering Garter Snake | Squamata | Grasslands and forests in western North America | Thamnophis elegans |
| Wangi Wangi Skink | Squamata | Indonesia | Lipinia wangi |
| Wapiti Snake | Squamata | Found in northern South America | Anilius scytale |
| Warm Spring Glass Lizard | Squamata | Southwestern United States | Ophisaurus attenuatus longicaudus |
| Warner's Gecko | Squamata | Vietnam | Gekko warneri |
| Warren's Snake | Squamata | Mexico | Tantilla warneri |
| Wart Snake | Squamata | Freshwater and coastal habitats in Southeast Asia | Acrochordus javanicus |
| Wart-Headed Gecko | Squamata | Tropical forests of Central and South America | Thecadactylus rapicauda |
| Wart-Headed Tree Frog | Anura | Southeast Asia | Theloderma asperum |
| Wart-Headed Viper | Squamata | Southeast Asia | Tropidolaemus wagleri |
| Water Anole | Squamata | Freshwater habitats in Central America | Anolis aquaticus |
| Water Dragon | Squamata | Freshwater habitats in Southeast Asia | Physignathus cocincinus |
| Water Moccasin | Squamata | Wetlands and waterways in the southeastern United States | Agkistrodon piscivorus |
| Water Monitor | Squamata | Wetlands and tropical forests in Southeast Asia | Varanus salvator |
| Water Skink | Squamata | Australia | Eulamprus quoyii |
| Water Vole Snake | Squamata | Europe | Natrix maura |
| Waterfall Gecko | Squamata | Waterfalls and wet rock walls in India | Cnemaspis wynadensis |
| Waterford Lizard | Squamata | Found in northwestern Mexico | Sceloporus waterfallii |
| Watkins' Dwarf Gecko | Squamata | Puerto Rico | Sphaerodactylus watkinsii |
| Watusi Cobra | Squamata | Grasslands and savannas in East Africa | Naja annulifera |
| Webb's Gecko | Squamata | Found in parts of the Middle East | Ptyodactylus watsoni |
| Weddell Sea Skink | Squamata | Endemic to Antarctica | Leiolopisma weddellii |
| Wedel's Wart Snake | Squamata | Indonesia | Acrochordus wedeli |
| Wedge-Snouted Skink | Squamata | Tropical forests of the Philippines | Brachymeles boulengeri |
| Weigold's Gecko | Squamata | Tropical forests in Southeast Asia | Hemidactylus wegneri |
| Weimar's Gecko | Squamata | Endemic to parts of Central Africa | Hemidactylus weimaranis |
| West African Black Cobra | Squamata | West Africa | Naja melanoleuca |
| West African Chameleon | Squamata | West Africa | Chamaeleo gracilis |
| West African Collared Lizard | Squamata | West Africa | Platysaurus guttatus |
| West African Crocodile | Crocodilia | Found in western and central Africa | Crocodylus suchus |
| West African Dwarf Crocodile | Crocodilia | West Africa | Osteolaemus tetraspis |
| West African House Snake | Squamata | West Africa | Lamprophis fuliginosus |
| West African Kob Snake | Squamata | West Africa | Buhoma dcmmheri |
| West African Leaf-Toed Gecko | Squamata | West Africa | Hemidactylus richardi |
| West African Mud Turtle | Testudines | Endemic to western Africa | Pelusios castaneus |
| West African Racer | Squamata | West Africa | Platyceps neumayeri |
| West African Rock Python | Squamata | West Africa | Python sebae |
| West African Slender-Snouted Crocodile | Crocodilia | Found in western and central Africa | Mecistops cataphractus |
| West African Spiny-Tailed Lizard | Squamata | West Africa | Uromastyx geyri |
| West African Spiral-Horned Chameleon | Squamata | West Africa | Trioceros montium |
| West African Spitting Cobra | Squamata | West Africa | Naja nigricollis |
| West African Toad-Headed Agama | Squamata | West Africa | Xenagama batillifera |
| West Coast Legless Lizard | Squamata | United States | Anniella pulchra |
| Western Banded Gecko | Squamata | United States | Coleonyx variegatus |
| Western Beaked Gecko | Squamata | Australia | Rhynchoedura ornata |
| Western Blackhead Snake | Squamata | Found in southwestern North America | Tantilla planiceps |
| Western Blind Snake | Squamata | Deserts and dry areas in western North America | Leptotyphlops humilis |
| Western Blue-Tongued Skink | Squamata | Endemic to southwestern Australia | Tiliqua occipitalis |
| Western Box Turtle | Testudines | Found in central and western North America | Terrapene ornata |
| Western Coachwhip | Squamata | Found in southwestern North America | Masticophis flagellum |
| Western Diamond-Backed Rattlesnake | Squamata | Southwestern United States | Crotalus atrox |
| Western Diamondback Rattlesnake | Squamata | Deserts and grasslands in southwestern North America | Crotalus atrox |
| Western Fence Lizard | Squamata | United States | Sceloporus occidentalis |
| Western Frog-Eyed Gecko | Squamata | Central Asia | Teratoscincus scincus |
| Western Garter Snake | Squamata | Found in western North America | Thamnophis elegans |
| Western Green Lizard | Squamata | Europe | Lacerta bilineata |
| Western Green Mamba | Squamata | West Africa | Dendroaspis viridis |
| Western Ground Snake | Squamata | Deserts and dry grasslands in western North America | Sonora semiannulata |
| Western Hog-Nosed Snake | Squamata | United States | Heterodon nasicus |
| Western Hognose Snake | Squamata | Prairies and deserts in western North America | Heterodon nasicus |
| Western Hook-Nosed Snake | Squamata | United States | Gyalopion canum |
| Western Painted Turtle | Testudines | Found in western North America | Chrysemys picta bellii |
| Western Pond Turtle | Testudines | Found in western North America | Actinemys marmorata |
| Western Pygmy Rattlesnake | Squamata | Found in southeastern North America | Sistrurus miliarius |
| Western Ribbon Snake | Squamata | United States | Thamnophis proximus |
| Western Rough Gecko | Squamata | Central Asia | Cyrtopodion caspius |
| Western Sand Boa | Squamata | Middle East | Eryx jayakari |
| Western Skink | Squamata | Woodlands and grasslands in western North America | Plestiodon skiltonianus |
| Western Slender Glass Lizard | Squamata | United States | Ophisaurus attenuatus |
| Western Smooth Snake | Squamata | Found in western North America | Contia tenuis |
| Western Spotted Gecko | Squamata | Central Asia | Teratoscincus scincus |
| Western Spotted Whipsnake | Squamata | Western North America | Masticophis taeniatus |
| Western Swamp Turtle | Testudines | Coastal wetlands and rivers in southwest Australia | Emydura macquarii |
| Western Terrestrial Garter Snake | Squamata | Western North America | Thamnophis elegans |
| Western Three-Toed Amphiuma | Caudata | Endemic to Alabama and Mississippi | Amphiuma pholeter |
| Western Worm Lizard | Squamata | South America | Amphisbaena occidentalis |
| Western Worm Snake | Squamata | United States | Carphophis vermis |
| Wetmore's Four-Eyed Turtle | Testudines | Endemic to southern China | Sacalia quadriocellata |
| Whine Gecko | Squamata | Found in parts of Southeast Asia | Cyrtopadion whiteheadi |
| Whip Snake | Squamata | Arid environments in Australia | Demansia psammophis |
| Whip-Tailed Chameleon | Squamata | Madagascar | Brookesia spp. |
| Whipsnake Racer | Squamata | Central and eastern North America | Masticophis flagellum |
| Whiptail Ameiva | Squamata | South America | Ameiva ameiva |
| Whiptail Lizard | Squamata | Deserts and grasslands in southwestern North America | Aspidoscelis uniparens |
| White Crested Gecko | Squamata | New Caledonia | Rhacodactylus ciliatus |
| White Lipped Island Snake | Squamata | Mauritius | Alopecophis chalcodes |
| White Marsh Snake | Squamata | North America | Liodytes alleni |
| White-Barred Racer | Squamata | Found in eastern North America | Coluber constrictor |
| White-Bellied Grass Skink | Squamata | Australia | Saproscincus mustelinus |
| White-Bellied Skink | Squamata | Endemic to Tasmania | Niveoscincus microlepidotus |
| White-Cheeked Gecko | Squamata | Endemic to Madagascar | Paroedura homalorhina |
| White-Chinned Whip Snake | Squamata | India | Ahaetulla perroteti |
| White-Collared Lizard | Squamata | Found in central North America | Crotaphytus collaris |
| White-Headed Gecko | Squamata | Found in parts of South America | Phyllopezus pollicaris |
| White-Headed Snake | Squamata | Australia | Hoplocephalus bitorquatus |
| White-Lipped Bushmaster | Squamata | Tropical forests of South America | Lachesis muta |
| White-Lipped Island Gecko | Squamata | Mauritius | Nactus serpensinsula |
| White-Lipped Mud Turtle | Testudines | Found in Central America | Kinosternon leucostomum |
| White-Lipped Python | Squamata | Tropical forests in Southeast Asia | Bothrochilus boa |
| White-Lipped Viper | Squamata | Southeast Asia | Trimeresurus albolabris |
| White-Nosed Gecko | Squamata | Tropical forests in Africa | Hemidactylus albopunctatus |
| White-Spotted Gecko | Squamata | Philippines | Gekko carusadensis |
| White-Spotted Leaf-Toed Gecko | Squamata | Found in parts of Southeast Asia | Hemiphyllodactylus typus |
| White-Tailed Anole | Squamata | Endemic to Jamaica | Anolis semilineatus |
| White-Tailed Leaf-Tailed Gecko | Squamata | Tropical forests of Madagascar | Uroplatus sameiti |
| Whitebelly Caiman | Crocodilia | South America | Paleosuchus trigonatus |
| Whitebelly Slider | Testudines | Freshwater lakes and rivers in southeastern United States | Trachemys gaigeae |
| Whitespotted Bamboo Viper | Squamata | Southeast Asia | Trimeresurus albolabris |
| Whitewater Snake | Squamata | Found in eastern North America | Nerodia sipedon |
| Wickham's Skink | Squamata | Australia | Lerista wickhami |
| Wide-Headed Skink | Squamata | Grasslands and savannas in Africa | Mabuya macularia |
| Wied's Gecko | Squamata | Found in parts of South America | Homonota wiedii |
| Wied's Snake | Squamata | South America | Leptotyphlops weidii |
| Wiegmann's Gecko | Squamata | Namibia and South Africa | Pachydactylus werneri |
| Wilcox's Leaf-Toed Gecko | Squamata | Mexico | Phyllodactylus wilobesi |
| Wilkins' Spiny-Tailed Lizard | Squamata | Jordan and Saudi Arabia | Uromastyx wilkinsi |
| Williamson's Swamp Turtle | Testudines | Australia | Emydura macquarii williamsi |
| Wilson's Grayish Plated Lizard | Squamata | Southern Africa | Gerrhosaurus validus |
| Wilson's Snake | Squamata | Australia | Parasuta wilsoni |
| Wilson's Snake-Necked Turtle | Testudines | Wetlands in Australia | Chelodina oblonga |
| Windward Banded Gecko | Squamata | Southwestern USA and northwestern Mexico | Coleonyx reticulatus |
| Woma Dwarf Python | Squamata | Australia | Antaresia woma |
| Woma Python | Squamata | Deserts and arid regions of western and central Australia | Aspidites ramsayi |
| Wonambi Python | Squamata | Northern Australia | Liasis oenpelliensis |
| Wood File Snake | Squamata | Southeast Asia | Acrochordus granulatus |
| Wood Turtle | Testudines | Eastern North America | Glyptemys insculpta |
| Woodhouse's Toad | Anura | Central and western North America | Anaxyrus woodhousii |
| Woodland Snake | Squamata | United States | Rhadinaea flavilata |
| Woolly Snake | Squamata | Found in parts of Asia | Orthriophis taeniurus |
| Worm Lizard | Amphisbaenia | Middle East | Diplometopon zarudnyi |
| Worm Snake | Squamata | Found in eastern North America | Carphophis amoenus |
| Wright's Skink | Squamata | New Zealand | Oligosoma wrighti |
| Wulfing's Chameleon | Squamata | Eastern Africa | Trioceros werneri |