Encyclopedias, Almanacs, Transcripts, and Maps
- Siwa Oasis
- Siwai
- Skármeta, Antonio (1940–)
- Skateboarding
- Skateholm
- Skepticism, Contemporary
- Skepticism, History of
- Skiing, Alpine
- Skiing, Nordic
- Skinner, B. F. (1904–1990)
- Skinner, George Ure (1804–1867)
- Skokomish
- Skovoroda, Hryhorii Savych (Grigorii Savvich) (1722–1794)
- SLANGUAGE
- Slave Revolts
- Slave Singing/Music Making
- Slave Trade, Abolition of
- Slavs and the Early Slav Culture
- Slayton, Donald Kent (“Deke”)
- Sleb