Author
- Ilyās ibn ʻAbbās Mullā Shaykh al-Kurdī1
- Imami Heravi1
- Imbert Feutrier1
- Immanuel Tremellius1
- Imām al-Dīn ibn Luṭf Allāh Lāhūrī1
- Inayat Khan1
- Inayet Efendi1
- Innocent III1
- Ippolito Libri1
- Irbilī, Aḥmad ibn Mūsá, d. 12251
- Isaac Albalag1
- Isaac Israeli ben Joseph1
- Isaac Israeli ben Solomon1
- Isaac Lattes1
- Isaac Lopez1
- Isaac Sasportas1
- Isaac ben Joseph of Corbeil1
- Isaac the Blind1
- Isaak ben Meïr from Düren1
- Isaiah di Trani1