Butler's Wolf Snake 
Cadle's Forest Racer 
California kingsnake 
California Whipsnake 
Cantor's Dwarf Reed Snake 
Caspian whipsnake 
Cave-dwelling Rat Snake 
Central American Lyresnake 
Central American Tree Snake 
Chan-ard Mountain Reed Snake 
Checkered keelback 
Chequered Keelback 
Chicken Snake 
Chinese ratsnake 
Clouded snake 
Coachwhip 
Coelognathus helena monticollaris 
Coelognathus philippinus 
Collared Cat Snake 
Coluber constrictor 
Common Blunt-headed Tree Snake 
Common egg eater 
Common Forest Racer 
Common Garter Snake