Author
- Gilbert de La Porrée3
- Gorakṣanātha Heiliger3
- Grand Inquisitor of Spain3
- Gregory of Nazianzus3
- Guillaume de Lanicia3
- Hamdullah Hamdi3
- Hasan Sezai Gülşenî3
- Hayashi Shihei3
- Henry Hakesalt3
- Henry Suso3
- Honorat Bovet3
- Hubert de Burgh, 1st Earl of Kent3
- Ibn 'Abd al-Barr3
- Ibn Hijjah al-Hamawi3
- Ibn Jaber al-Andalusi3
- Ibn al-Imām3
- Ibn al-Kharrāṭ3
- Immanuel Bonfils3
- Isaac Newton3
- Ishmael ben Abraham Isaac ha-Kohen3