Historians, Miscellaneous: Biographies
- James Hopwood Jeans
- James Howard Meredith
- James Kelman
- James McKeen Cattell
- James Nasmyth
- Jan van Ruysbroeck
- Jaroslav Heyrovsky
- Jean Bauhin
- Jean Fernel
- Jean Frederic Joliot-Curie
- Jean Sibelius
- Jerry Pinkney
- Jerry Yang
- Jessie Carney Smith
- Jessie Redmon Fauset
- Joan Quigley
- Johan Gadolin
- Johann Gottlob Lehmann
- John Amos
- John Coleman Bennett