Encyclopedias, Almanacs, Transcripts, and Maps
- Silk Workers' Revolts
- Silliman, Gold Selleck
- Silver Age
- Silver Age
- Silver Bullet Trick
- Simeon, King of Bulgaria
- Simitiere, Pierre-Eugène Du
- Simmons, Ruth J.
- Simon Denis Rattle
- Simon Dubnov
- Simon Girty
- Simón Iturri Patiño
- Simon Nelson Patten
- Simon, Claude
- Simone, Nina (Waymon, Eunice Kathleen)
- Simonov Monastery
- Simpson Miller, Portia
- Simpson, Lorna
- Simsbury Mines, Connecticut
- Sinan (Sinan bin Abdulmennan, c. 1489–1588)