Agkistrodon | bilineatus bilineatus | Cantil, common cantil, Mexican moccasin, tropical moccasin, Mexican cantil | Mexico and Central America |
| bilineatus howardgloydi | Castellana | Honduras, Nicaragua, and Costa Rica |
| bilineatus lemosespinali | Cantil, Mexican moccasin | Mexico and Central America |
| bilineatus russeolus | Cantil, common cantil, Mexican moccasin, | Mexico and Central America |
| bilineatus taylori | Taylor’s cantil, ornate cantil | Mexico |
Bothriechis | aurifer | Yellow-blotched palm-pitviper, Guatemalan palm viper | Mexico and Guatemala |
| bicolor | Guatemalan palm-pit viper, Guatemalan tree viper | Mexico, Guatemala, and Honduras |
| rowleyi | Mexican palm pit viper | Mexico |
| schlegelii | Eyelash viper | Central and South America |
Bothrops | asper | Fer-de-lance | Mexico and South America |
Crotalus | basiliscus | Mexican west coast rattlesnake, Mexican green rattler | Mexico |
| cerastes cerastes | Sidewinder, horned rattlesnake, sidewinder rattlesnake | US and Northwestern Mexico |
| cerastes cercobombus | Sonoran Desert sidewinder, Sonoran sidewinder | US and Northwestern Mexico |
| durissus durissus | South American rattlesnake, tropical rattlesnake | South America |
| durissus totonacus | Totonacan rattlesnake | Northern Mexico |
| durissus tzabcan | Middle American rattlesnake, Central American rattlesnake, tzabcan | Mexico and Central America |
| enyo enyo | Baja California rattlesnake, Lower California rattlesnake | US and Northwestern Mexico |
| exsul (Ruber) | Red diamond rattlesnake, red rattlesnake, red diamond snake | Baja California, Mexico |
| exsul exsul (Ruber) | Red diamond rattlesnake, red rattlesnake, red diamond snake | Baja California, Mexico |
| intermedius gloydi | Oaxacan small-headed rattlesnake | Mexico |
| lannomi | Autlán rattlesnake | Mexico |
| lepidus castaneus | Rock rattlesnake | US and Mexico |
| lepidus klauberi | Banded rock rattlesnake, green rattlesnake, green rock rattlesnake | US and Mexico |
| lepidus lepidus | Rock rattlesnake, green rattlesnake, blue rattlesnake | US and Mexico |
| lepidus maculosus | Durango rock rattlesnake | Mexico |
| lepidus morulus | Rock rattlesnake | Mexico |
| mitchelli angelensis | Angel de la Guarda Island speckled rattlesnake | Angel de la Guarda Island in the Gulf of Mexico |
| mitchelli mitchelli | Speckled rattlesnake, Mitchell’s rattlesnake, white rattlesnake | US and Mexico |
| mitchelli muertensis | El Muerto Island speckled rattlesnake | El Muerto Island Mexico |
| mitchelli pyrrhus | Southwestern speckled rattlesnake, Mitchell’s rattlesnake | US and Mexico |
| molossus estabanensis | San Esteban Island rattlesnake | San Esteban Island Mexicol |
| molossus molossus | Northern black-tailed rattlesnake, green rattler | US and Mexico |
| molossus nigrescens | Mexican black-tailed rattlesnake | US and Mexico |
| molossus oaxacus | Oaxacan black-tailed rattlesnake | Mexico |
| polystictus | Mexican lance-headed rattlesnake, lance-headed rattlesnake | Mexico |
| pricei miquihuanus | Eastern twin-spotted rattlesnake | Mexico |
| pricei pricei | Western twin-spotted rattlesnake | Mexico |
| Pusillus | Tancitaran dusky rattlesnake | Mexico |
| ruber lorenzoensis | San Lorenzo Island rattlesnake | San Lorenzo Island Mexico |
| ruber lucasensis | San Lucan diamond rattlesnake | Mexico |
| ruber ruber | Red diamond rattlesnake | US and Mexico |
| scutulatus salvini | Huamantlan rattlesnake | Mexico |
| scutulatus scutulatus | Mojave rattlesnake | US and Mexico |
| stejnegeri | Long-tailed rattlesnake | Mexico |
| tigris | Tiger rattlesnake, tiger rattler | US and Mexico |
| tortugensis | Tortuga Island diamond rattlesnake, Tortuga Island rattlesnake | Tortuga Island Mexico |
| transversus | Cross-banded mountain rattlesnake | Mexico |
| triseriatus aquilus | Querétaro dusky rattlesnake, Queretaran dusky rattlesnake | Mexico |
| triseriatus armstrongi | Western dusky rattlesnake | Mexico |
| triseriatus triseriatus | Dusky rattlesnake | Mexico |
| viridis caliginus | Coronado Island rattlesnake | Coronado Island Mexico |
| willardi amabilis | Del Nido ridge-nosed rattlesnake | Mexico |
| willardi meridionalis | Southern ridge-nosed rattlesnake | Mexico |
| willardi obscurus | Animas ridge-nosed rattlesnake | US and Mexico |
| willardi silus | Chihuahuan ridge-nosed rattlesnake | Mexico |
| willardi willardi | Arizona ridge-nosed rattlesnake | US and Mexico |
Ophryacus | undulatus | Mexican horned pitviper, undulated pit viper | Mexico |
Porthidium | dunni | Dunn’s hognosed pitviper | Mexico |
| godmani | Godman’s montane pitviper, Godman’s pit viper | Mexico and Central America |
| hespere | Colima hognosed pitviper | Mexico |
| nasutum | Rainforest hognosed pitviper, horned hog-nosed viper | Mexico, Central America, and South America |
| yucatanicum | Yucatán hognosed pitviper | Mexico |
Sistrurus | ravus | Mexican pigmy rattlesnake, Mexican pygmy rattlesnake | Mexico |