Encyclopedias, Almanacs, Transcripts, and Maps
- Smelter
- Smith, Hannah Whitall
- Smith, Morton
- Smith, Robert Angus (1817 – 1884) Scottish Chemist
- Smith, W. Robertson
- Smith, Wilfred Cantwell
- Smoky Bats (Furipteridae)
- Snakes
- Snapping Turtles (Chelydridae)
- Snouck Hurgronje, Christiaan
- Snow Leopard
- snowdrop
- Snyder,Gary Sherman (1930 – ) American Writer and Poet
- Sobers, Sir Gary
- Social and Liberal Democrats
- social democracy
- Social Democratic Labour Party
- Social Ecology
- Social Insects
- Social Security, UK Department of