| Kingdom: | Animalia |
| Phylum: | Chordata |
| Subphylum: | Vertebrata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Viperidae |
- Genus
- species – Common Name
- Adenorhinus
- (1 species) – Mountain Bush Viper
- Agkistrodon
- (12 species) – Copperhead and Cottonmouth
- Atheris
- (9 species) – Bush Viper
- Atropoides
- (3 species) – Jumping Pit Viper
- Azemiops
- (1 species) – Fea’s Viper
- Bitis
- (14 species) – Puff Adder
- Bothriechis
- (7 species) – Palm Pit Viper
- Bothriopsis
- (7 species) – Forest Pit Viper
- Bothrops
- (30 species) – Lancehead
- Calloselasma
- (1 species) – Malayan Pit Viper
- Causus
- (6 species) – Night Adder
- Cerastes
- (2 species) – Horned Viper
- Cerrophidion
- (3 species) – Montane Pit Viper
- Crotalus
- (29 species) – Rattlesnake
- Daboia
- (5 species) – Mid-East Viper
- Deinagkistrodon
- (1 species) – Hundred-pace Viper
- Echis
- (10 species) – Saw-scaled Viper
- Eristicophis
- (1 species) – McMahon’s Viper
- Hypnale
- (3 species) – Humpnose Viper
- Lachesis
- (1 species) – Bushmaster
- Ophryacus
- (1 species) – Mexican Horned Pit Viper
- Ovophis
- (5 species) – Asian Pit Viper
- Porthidium
- (8 species) – Hognose Viper
- Pseudocerastes
- (3 species) – False Horned Viper
- Sistrurus
- (3 species) – Pigmy Rattlesnake
- Trimeresurus
- (37 species) – Asian Pit Viper
- Tropidolaemus
- (1 species) – Wagler’s Palm Viper
- Vipera
- (20 species) – Sand Viper
