Author
- Henry VIII of England1
- Honorat de Bueil, seigneur de Fontaines1
- House of Borgia1
- House of Gondi1
- House of Ventimiglia1
- House of della Rovere1
- Humphrey Wellys1
- Ibrāhīm al-Ḥusaynī1
- Ibrāhīm ibn ʻAlī Qalqashandī1
- Imbert Feutrier1
- Immanuel Bonfils1
- Jabir ibn Hayyan1
- Jacob ben Asher1
- Jacobo Bellenden1
- Jacobus Balbi1
- Jacobus Dinetus1
- Jacobus de Voragine1
- Jacopo Nannis de Piccolomini1
- Jacopo Piccolomini-Ammannati1
- Jacopo Ragone1