- God (Islam)--Worship and love3
- Graduals (Liturgical books)3
- Hadith--Hermeneutics3
- Hadith--Language, style3
- Hadith--Terminology3
- Half bindings3
- History, Military3
- Ibn Abī Jumhūr al-Aḥsāʼī, Muḥammad ibn ʻAlī, -approximately 1473. Masālik al-afhām3
- Ibn al-Najjār, Taqī al-Dīn Muḥammad ibn Aḥmad, 1492 or 1493-1564 or 1565. Mukhtaṣar al-Taḥrīr3
- Interest (Islamic law)3
- Iqnāʼ (Ḥujāwī, Mūsá ibn Aḥmad)3
- Isfarāyīnī, Muḥammad ibn Muḥammad, -1285. Ḍawʼ al-Miṣbāḥ3
- Islam--Prayers and devotions3
- Islamic occultism3
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Maṭāliʻ al-anẓār3
- Jaʻbarī, Ibrāhīm ibn ʻUmar, 1242 or 1243-1331 or 1332. Wāḍiḥah fī tajwīd al-Fātiḥah3
- Kaydānī. Fiqh al-Kaydānī3
- Khabbāzī, ʻUmar ibn Muḥammad, 1231 or 2-1292. Mughnī fī uṣūl al-fiqh3
- Khiḍr (Legendary character)3
- Kinship (Islamic law)3