Encyclopedias, Almanacs, Transcripts, and Maps
- Springheeled Jack
- Springtails
- Springtails
- Springtails: Collembola
- Sprinkle, Ronald Leo (1930-)
- Spurge Family
- Spurge Family
- Square Root
- Square Root
- Squeakers and Cricket Frogs: Arthroleptidae
- Squinting
- Squire, J. R. M. (ca. 1860)
- Squirrel Fish
- Squirrel Fish
- Squirrel Monkeys and Capuchins: Cebidae
- Squirrels and Relatives: Sciuridae
- SRI International
- Sridhara
- Srinivasa Ramanujan
- Sripati