Encyclopedias, Almanacs, Transcripts, and Maps
- Somerset, Charles Seymour, 6th duke of
- Somerset, William Seymour, 1st duke of
- Son, Trinh Cong
- Sondok
- Songgram, Luang Pibul
- Songhai Empire
- Songs, Popular
- Sónjo
- Sonny Bono
- Soo Locks
- Sophia Vasilevna Kovalevsky
- Soriano, Edward
- Sorokoust
- Sororities, U.S.
- Soskovets, Oleg Nikolayevich
- Soslovie
- Soto, Hernando de
- Soto, Hernando de
- Soul Tax
- Sourou Migan Apithy