- Islam--Study and teaching1
- Islam--Terminology1
- Islamic New Year1
- Islamic calendar1
- Islamic chronology1
- Islamic heresies1
- Islamic interpretations of Jesus Christ1
- Islamic literature, Arabic1
- Islamic poetry1
- Islamic poetry, Persian1
- Islamic religious education1
- Islamic rosary1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tasdīd al-ʻaqāʾid fī sharḥ Tajrīd al-qawāʻid1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tashyīd al-Qawāʻid1
- Iẓhār al-asrār (Birgivî Mehmet Efendi)1
- Jabbārīyah1
- Jawharat al-tawḥīd (Laqānī, Ibrāhīm ibn Ibrāhīm)1
- Jawshan al-kabīr1
- Jawī Zādah, Muḥammad ibn Ilyās, -1547 or 1548. Risālah fī al-masḥ ʻalá al-khuffayn1
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd1