Author
- Ibn Miftāḥ1
- Ibn Zaqqa'ah1
- Ibn al-Haytham1
- Ibn an-Nahhas al-Halabi1
- Ibn ʻAbd al-Riḍá1
- Ibrāhīm Shabistarī1
- Ibrāhīm ibn Hibat Allāh Lakhmī1
- Ibrāhīm ibn Muḥammad Ṣafāqisī1
- Ibrāhīm ibn Mūsá Ṭarābulusī1
- Ibrāhīm ibn ʻAlī Ṭaraṣūṣī1
- Ikhtiyār al-Dīn ibn Ghiyāth al-Dīn1
- Imad al-Din Mahmud ibn Mas‘ud Shirazi1
- Inayet Efendi1
- Isaac Luria1
- Isaac Newton1
- Isfarāyīnī, Muḥammad ibn Muḥammad, d. 13461
- Ishmael ben Abraham Isaac ha-Kohen1
- Ismāʻīl ibn Ibrāhīm İsfendiyaroǧlu1
- Isḥāq1
- Isḥāq ibn Yūsuf Ṣardafī1