- Sea Parrot Island
- Sealion Rock
- Second Priest Rock
- Sedanka Island
- Seguam Island
- Segula Island
- Semichi Islands
- Semisopochnoi Island
- Sentry Rock
- Shemya Island
- Ship Rock
- Siihmlugis
- Silak Island
- Simtusix
- Sitam Hachan Tanangis
- Sitxidam Ungluu
- Skagul Island
- Sobaka Rock
- Sootin Rocks
- South Rocks
- Sparrow Rocks
- Staten Island
- Sturdevant Rock
- Suuksax
- Swallow Rocks
- Sunbeam
- Saint Matthew Island
- Smelt Island
- South Pinnacle Rock
- Sanak Island