- Jaghmīnī, Maḥmūd ibn Muḥammad, -1221?1
- Judaism1
- Judgment Day (Islam)1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Mukhtaṣar al-Muntahá1
- Jāmī, 1414-1492. Risālah-i muʻammā1
- Jārbardī, Fakhr al-Dīn Aḥmad ibn al-Ḥasan, -1345. Mughnī fī ʻilm al-naḥw1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)1
- Khānaqāh-i Niʻmat Allāhī1
- Knowledge, Theory of (Islam)1
- Kumayl ibn Ziyād, 633 or 634-7011
- Leather doublures1
- Legal instruments1
- Letter writing, Persian1
- Letter writing, Turkish1
- Lexicography1
- Lexicology1
- Love--Philosophy1
- Mahdi1
- Manuscripts, Sanskrit1
- Markets1