Smooth Guardian Frog 
Snouted Grassland Frog 
South American common toad 
Southeast Asian Wood Frog 
Southern Brown tree frog 
Southern cricket frog 
Southern leopard frog 
Southern toad 
Spinomantis fimbriatus 
Spiny Slender Toad 
Spiny toad 
Spiny-headed tree frog 
Spot-legged Tree Frog 
Spotted Bush Frog 
Spotted Grass Frog 
Spotted Litter Frog 
Spotted-thighed tree frog 
Spring peeper 
Spring Rainfrog 
Spurred Rain Frog 
Squirrel tree frog 
Sri Lanka rock frog 
Sri Lanka Wood Frog 
Sri Lankan Golden-backed frog