Author
- Hugh Ripelin of Strasburg1
- Humphrey Wellys1
- Ibn Hajar al-Haytami1
- Ibn Nubata1
- Ibn al-Farid1
- Ibn al-Khabbaz1
- Ibn al-Nafis1
- Ibn al-Tayyib1
- Ibn al-Wardi1
- Ibn-al-Anbārī1
- Ibrāhīm ibn Muḥammad ʻIṣām al-Asfarāyīnī1
- Ibrāhīm ibn ʻAlī Ḥuṣrī1
- Igreja e Convento de Santa Maria de Aguiar1
- Ildibrandinus1
- Imad ad-Din al-Isfahani1
- Imam Birgivi1
- Immanuel Tremellius1
- Innocent IV1
- Isabella I of Castile1
- Izz al-Din ibn 'Abd al-Salam1