Author
- Haymo of Halberstadt3
- Henry Hakesalt3
- Honorat Bovet3
- Hubert de Burgh, 1st Earl of Kent3
- Hugh Ripelin of Strasburg3
- Hugh of Saint-Cher3
- Ibn Taymiyyah3
- Imam Ar-Rafi'i3
- Innocent III3
- Ismāʻīl ibn Muḥammad al-ʻAjlūnī3
- Jacobus de Cessolis3
- Jaghmini3
- Jalal al-Din Davani3
- Jayadeva3
- Jean Gerson3
- Johannes de Sacrobosco3
- John Gower3
- Joseph ben Abraham Gikatilla3
- Khayr al-Din al-Ramli3
- Laugākṣi Bhāskara3