Other Religious Beliefs: Biographies
- Heinrich Khunrath
- Helena Petrovna Blavatsky
- Henricus Cornelius Agrippa
- Henry Steel Olcott
- I Ching
- Israel Regardie
- James Randi
- Jean Baptiste Van Helmont
- Jean-Baptiste Morin
- Jeane Dixon
- Jiddu Krishnamurti
- Johann Rudolph Glauber
- John Dee
- John Nelson
- John Toland
- John William Strutt Baron Rayleigh
- Jozef Maria Hoene-Wronski
- L. Ron Hubbard
- Leo Taxil
- Maharishi Mahesh Yogi