• Yucatan Blind Snake, Typhlops microstomus

Thread Sankes, Family Leptotyphlopidae

• Goudot's Thread Snake, Leptotyphlops goudotii

Boas, Family Boidae

• Boa constrictor, Boa constrictor

Colubrids, Family Colubridae

• Southern Racer, Coluber constrictor
• Mottled-jaw Spotbelly Snake, Coniophanes bipunctatus
• Black-striped Snake, Coniophanes imperialis
• Striped Spotbelly Snake, Coniophanes quinquevittatus
• Schmidt's Striped Snake, Coniophanes schmidti
• Lizard Killer, Conophis lineatus
• Short-faced Snail-eater, Dipsas brevifacies
• Middle American Smooth-scaled Racer, Dryadophis melanolomus
• Tropical Indigo Snake, Drymarchon corais
• Speckled Racer, Drymobius margaritiferus
• Red-blotched Ratsnake, Elaphe flavirufa
• ? Blotched Hooknosed Snake, Ficimia publia
• Common Bluntheaded Treesnake, Imantodes cenchoa (northeast only)
• Spotted Bluntheaded Treesnake, Imantodes gemmistratus
• Tropical Milksnake, Lampropeltis triangulum
• Yucatan Cat-eyed Snake, Leptodeira frenata
• Small-spotted Cat-eyed Snake, Leptodeira polysticta
• Green Parrot Snake, Leptophis ahaetulla
• Bronze-backed Parrot Snake, Leptophis mexicanus
• Neotropical Coachwip, Masticophis mentovarius
• Red Coffe Snake, Ninia sebae
• Brown Vine Snake, Oxybelis aeneus
• Green Vine Snake, Oxybelis fulgidus
• Long-tailed False Coral, Pliocercus elapoides
• Bird-eating Treesnake, Pseustes poecilonotus (northeast only)
• Half Coral Snake, Scaphiodontophis annulatus (northeast only)
• Common Tropical Ratsnake, Senticolis triaspis
• Cloudy Snail-eater, Sibon nebulata (northeast only)
• Yucatan Snail-eater, Sibon sanniola
• Ringed Snail-eater, Sibon sartorii
• Tiger Treesnake, Spilotes pullatus
• Freminville's Scorpion-hunter, Stenorrhino freminvillii
• Mayan Golden-backed Snake, Symphimus mayae
• Mayan Black-headed Centipede-eater, Tantilla cuniculator
• Black-bellied Centipede-eater, Tantilla moesta
• Yucatan Dwarf Centipede-eater, Tantillita canula
• Checkered Garter Snake, Thamnophis marcianus
• Middle American Ribbon Snake, Thamnophis proximus

Coral Snakes, Family Elapidae (*venomous)

• Variable Coral Snake, Micrurus diastema

Vipers, Family Viperidae (*venomous)

• Cantil, Agkistrodon bilineatus
• Barba Amarilla, Bothrops asper (northeast only)
• Neotropical Rattlesnake, Crotalus durissus
• Yucatan Hog-nosed Viper, Porthidium yucatanicum