- Sacred Kingfisher
- Sand Martin
- Sanderling
- Sandhill Crane
- Sandwich Tern
- Satin Bowerbird
- Satin Swiftlet
- Savannah Sparrow
- Scarlet-chested Sunbird
- Scarlet Robin
- Scissor-tailed Kite
- Sedge Warbler
- Senegal Coucal
- Senegal Eremomela
- Senegal Thick-knee
- Shikra
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Shy Albatross
- Silver Gull
- Silvereye
- Singing Honeyeater
- Slender-billed Gull
- Snow Bunting
- Snowy Albatross
- Snowy Egret
- Snowy Plover
- Soft-plumaged Petrel
- Song Sparrow
- Song Thrush
- Sooty Albatross
- Sooty Oystercatcher
- Southern Cassowary
- Southern Fulmar
- Southern Rockhopper Penguin
- Southern Scrub Robin
- Speckled Pigeon
- Spiny-cheeked Honeyeater
- Spotted Flycatcher
- Spotted Harrier
- Spotted Quail-thrush
- Spotted Towhee
- Spur-winged Lapwing
- Squatter Pigeon
- Steller's Jay
- Straw-necked Ibis
- Striated Heron
- Striated Starling
- Striped Kingfisher
- Sudan Golden Sparrow
- Sulphur-crested Cockatoo
- Sunda Zebra Finch
- Superb Fairywren
- Superb Lyrebird
- Swainson's Hawk
- Swallow-tailed Bee-eater
- Swamp Harrier