Encyclopedias, Almanacs, Transcripts, and Maps
- Stcherbatsky, Theodore
- Steady-State Economy
- stearic acid
- Steel, Sir David Martin Scott
- Stegner, Wallace (1909 – 1993) American Writer
- Stenolaemata (Marine Bryozoans)
- Stephanoberyciformes (Whalefishes and Relatives)
- Stephenson, George (1781–1848)
- sterility
- Stewart, James Maitland
- Sthiramati
- stick insect
- Stilts and Avocets (Recurvirostridae)
- Stirling Engines
- Stirling, Robert (1790–1878)
- Stochastic Change
- Stomatopoda (Mantis Shrimps)
- Stomiiformes (Dragonfishes and Relatives)
- stonechat
- Stones