Encyclopedias, Almanacs, Transcripts, and Maps
- Jebediah Strong Smith
- Jedediah Strutt
- Jefferson, Thomas, Paternity Issue
- Jeffery Goldstone
- Jeffreys, Alec John
- Jehovah's Witness Refusal of Blood Products
- Jellyfish: Scyphozoa
- Jenny Craig Diet
- Jensen, Wiers (1866-1925)
- Jephson, Ina (d. 1961)
- Jerboas
- Jerboas
- Jeremiah Dixon & Charles Mason
- Jeremiah Horrocks
- Jeremiah Trautman
- Jeremias Benjamin Richter
- Jerne, Niels K. (1911-1994)
- Jerome Friedman
- Jérôme Jean Louis Marie Lejeune
- Jerónimo Lobo