- Sakhalin Leaf Warbler
- Sand Martin
- Sanderling
- Sandhill Crane
- Saunders's Gull
- Scaly-breasted Munia
- Short-eared Owl
- Short-toed Snake Eagle
- Short-toed Treecreeper
- Siberian Blue Robin
- Siberian Long-tailed Rosefinch
- Siberian Sand Plover
- Slaty-backed Gull
- Song Thrush
- Sooty Shearwater
- Spotted Redshank
- Steller's Sea Eagle
- Streaked Shearwater
- Striated Heron