- Sabota Lark
- Saddle-billed Stork
- Sahel Bush Sparrow
- Sahel Paradise Whydah
- Sand Martin
- Sanderling
- Sandhill Crane
- Sandwich Tern
- Sardinian Warbler
- Saunders's Tern
- Savannah Sparrow
- Savi's Warbler
- Scaly-breasted Munia
- Scaly-throated Honeyguide
- Scarlet-backed Flowerpecker
- Scarlet-chested Sunbird
- Scissor-tailed Kite
- Scopoli's Shearwater
- Secretarybird
- Sedge Warbler
- Semipalmated Plover
- Semipalmated Sandpiper
- Senegal Coucal
- Senegal Eremomela
- Senegal Lapwing
- Senegal Thick-knee
- Sentinel Rock Thrush
- Sharpe's Starling
- Shelley's Starling
- Shikra
- Shining Drongo
- Shining Sunbird
- Shoebill
- Short-billed Dowitcher
- Short-eared Owl
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Shy Albatross
- Silver-eared Mesia
- Silverbird
- Silvery-cheeked Hornbill
- Simple Greenbul
- Singing Cisticola
- Slate-colored Boubou
- Slaty-backed Forktail
- Slender-billed Greenbul
- Slender-billed Gull
- Slender-billed Weaver
- Slender-tailed Nightjar
- Smew
- Snow Bunting
- Snow Goose
- Snowy-crowned Robin-Chat
- Sociable Weaver
- Socotra Cormorant
- Solitary Sandpiper
- Somali Bunting
- Somali Crow
- Somali Fiscal
- Somali Ostrich
- Sombre Greenbul
- Song Sparrow
- Song Thrush
- Sooty-headed Bulbul
- Sooty Chat
- Sooty Gull
- Sooty Shearwater
- South African Cliff Swallow
- South African Shelduck
- Southern Bald Ibis
- Southern Black Flycatcher
- Southern Black Korhaan
- Southern Boubou
- Southern Double-collared Sunbird
- Southern Fiscal
- Southern Grey-headed Sparrow
- Southern Masked Weaver
- Southern Red-billed Hornbill
- Southern Red Bishop
- Southern Yellow-billed Hornbill
- Spanish Imperial Eagle
- Spanish Sparrow
- Speckle-breasted Woodpecker
- Speckle-fronted Weaver
- Speckled Mousebird
- Speckled Pigeon
- Speckled Tinkerbird
- Spectacled Warbler
- Spectacled Weaver
- Speke's Weaver
- Spike-heeled Lark
- Spot-billed Pelican
- Spot-breasted Lapwing
- Spot-flanked Barbet
- Spotless Starling
- Spotted Crake
- Spotted Dove
- Spotted Flycatcher
- Spotted Nutcracker
- Spotted Palm Thrush
- Spotted Redshank
- Spotted Sandpiper
- Spotted Thick-knee
- Spur-winged Goose
- Spur-winged Lapwing
- Squacco Heron
- Steppe Eagle
- Stilt Sandpiper
- Stork-billed Kingfisher
- Stout Cisticola
- Straw-headed Bulbul
- Straw-tailed Whydah
- Streak-eared Bulbul
- Streaked Scrub Warbler
- Streaked Spiderhunter
- Streaked Wren-Babbler
- Streaky-headed Seedeater
- Streaky Seedeater
- Stresemann's Bushcrow
- Striated Heron
- Striolated Bunting
- Stripe-throated Bulbul
- Striped Kingfisher
- Subalpine Warbler
- Sudan Golden Sparrow
- Sultan Tit
- Sunda Pygmy Woodpecker
- Superb Starling
- Swainson's Sparrow
- Swainson's Spurfowl
- Swallow-tailed Bee-eater
- Swamp Flycatcher
- Swan Goose
- Swee Waxbill