- Sabine's Gull
- Saker Falcon
- Sand Martin
- Sanderling
- Sardinian Warbler
- Sarus Crane
- Savi's Warbler
- Saxaul Sparrow
- Scaly Babbler
- See-see Partridge
- Short-eared Owl
- Siberian Accentor
- Siberian Jay
- Siberian Rubythroat (beicki)
- Siberian Thrush
- Sinai Rosefinch
- Slender-billed Curlew
- Snowy Owl
- Sociable Lapwing
- Sombre Tit
- Southern Brown Kiwi
- Spanish Sparrow
- Spotless Starling
- Spotted Flycatcher
- Spur-winged Lapwing
- Steppe Eagle
- Striolated Bunting
- Surf Scoter
- Syrian Serin