- Islamic heresies1
- Islamic occultism1
- Islamic religious education1
- Israel--Acre1
- Iṣfahānī, Maḥmūd ibn ʻAbd al-Raḥmān, 1275 or 1276-1348 or 1349. Tasdīd al-ʻaqāʾid fī sharḥ Tajrīd al-qawāʻid1
- Iẓhār al-asrār (Birgivî Mehmet Efendi)1
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd1
- Jinn1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Sharḥ khuṭbah al-Quṭbīyah1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Maṭāliʻ al-anwār1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Maṭāliʻ al-anẓār1
- Jāmī, 1414-14921
- Jīlī, ʻAbd al-Karīm ibn Ibrāhīm, 1365 or 1366- Insān al-kāmil fī maʻrifat al-awākhir wa-al-awāʼil1
- Jīlī, ʻAbd al-Karīm ibn Ibrāhīm, 1365 or 1366- Risālat al-Tawḥīd1
- Kaffawī, Muḥammad ibn Ḥumayd, -1760 or 1761. Ādāb al-baḥth1
- Kemalpaşazade, 1468 or 1469-1534. Tafsīr al-Fātiḥah1
- Kemalpaşazade, 1468 or 1469-1534. Īḍāḥ al-iṣlāḥ1
- Khiḍr (Legendary character)1
- Khvānsārī, Jamāl al-Dīn, -1713? Ḥāshīyah ʻalá Tajrīd al-ʻaqāʼid1
- Khwājahʹzādah, Muṣṭafá ibn Yūsuf, -1487 or 14881