Schultze's Pit Viper 
Schwartze's Skink 
Scorpion mud turtle 
Selangor Forest Skink 
Seychelles day gecko 
Seychelles bronze gecko 
Seychelles skink 
Sharp-snouted rock lizard 
Sheltopusik 
Shieldnose Cobra 
Shiny Lightbulb Lizard 
Short-horned chameleon 
Short-nosed deceptive chameleon 
Shovel-snouted lizard 
Siamese crocodile 
Siamese leaf-toed gecko 
Siamese peninsula pit viper 
Side-striped chameleon 
Sinai agama 
Sinai Fan-fingered Gecko 
Sitana spinaecephalus 
Six-lined racerunner 
Slender Rainbow-Skink 
Slender Snail Sucker