Author
- Imami Heravi1
- Immanuel Bonfils1
- Imām al-Dīn ibn Luṭf Allāh Lāhūrī1
- Inayat Khan1
- Innocent XI1
- Isaac Aboab I1
- Isaac Aboab of Castile1
- Isaac Israeli ben Joseph1
- Isaac Newton1
- Isaac of Troki1
- Isaac the Blind1
- Isaak ben Meïr from Düren1
- Isabella I of Castile1
- Isidore of Seville1
- Ismāʻīl Qarah Kamāl1
- Ismāʻīl ibn Abī Bakr Ibn al-Muqrī1
- Ismāʻīl ibn Muḥammad al-ʻAjlūnī1
- Isobel Salcedo Larralde1
- Israel Alnaqua1
- Israel Yaakov Algazi1