- Sao Tome Oriole
- Shelley's Sparrow
- Shelley's Starling
- Shining Bronze Cuckoo
- Short-tailed Paradigalla
- Sickle-winged Guan
- Silver-eared Mesia
- Singing Honeyeater
- Slaty Bunting
- Solitary Tinamou
- Somali Sparrow
- Somali Starling
- Southern Emu-wren
- Southern Fulmar
- Southern Lapwing
- Speckled Wood Pigeon
- Spiny-cheeked Honeyeater
- Splendid Starling
- Spot-winged Wood Quail
- Spotted Quail-thrush
- Storm's Stork
- Streaked Scrub Warbler
- Superb Parrot
- Swamp Nightjar