Encyclopedias, Almanacs, Transcripts, and Maps
- Sunbirds (Nectariniidae)
- Sunbitterns (Eurypygidae)
- Sundanese Religion
- Sundén, Hjalmar
- sundew
- Sungrebes (Heliornithidae)
- Sunnah
- Śūnyam and Śūnyatā
- Superfund Amendments and Reauthorization Act (1986)
- Supernatural, The
- supersonic velocity
- Supply and Demand and Energy Prices
- Supreme Beings
- Supreme Court, Canadian
- Surabaja
- Sūrdās
- Surface and Groundwater Rights
- Surface and Groundwater Use
- Surface Mining
- Surface Mining Control and Reclamation Act (1977)