Encyclopedias, Almanacs, Transcripts, and Maps
- Sumac, Yma (1927–)
- Sumapaz, Republic of
- Sumbanese
- Sumbawans
- Summer Resorts
- Summit of the Americas
- Summitt, Pat(ricia) Head
- Sumner, William Graham (1840–1910)
- Sumu
- Sumu
- Sumud
- Sun City
- Sun Language Theory
- Sunwar
- Suomi, Verner Edward
- Superintendency for the Development of Amazonia (SUDAM)
- Superintendency of Agrarian Reform (SUPRA)
- Superior Military Tribunal
- SUPERORDINATE CLAUSE
- SUPERSTRATE