- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Ḥikmat al-ʻayn2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. ḥāshiyah ʻalá Sharḥ Mukhtaṣar al-Muntahá2
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. ḥāshiyah ʻalá Sharḥ Shamsīyah2
- Jānakīnātha Bhaṭṭācārya, active 16th century. Nyāyasiddhāntamañjarī2
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)2
- Khawwāṣ, Aḥmad ibn ʻAbbād, 1378?-1454. Kāfī fī ʻilmay al-ʻarūḍ wa-al-qawāfī2
- Khiḍr (Legendary character)2
- Kinship (Islamic law)2
- Kirmāstī, Yūsuf ibn ḥusayn, d. 1500. Wajīz fī al-uṣūl2
- Knowledge, Theory of (Islam)2
- Kāfī al-mubtadiʼ min al-ṭullāb (Ibn Balabān, Muḥammad ibn Badr al-Dīn)2
- Learning and scholarship2
- Letter writing, Persian2
- Loans (Islamic law)2
- Love2
- Lāmīyat al-ʻArab (Shanfará)2
- Manuscripts, Amharic2
- Manuscripts, Aramaic2
- Manuscripts, Armenian2
- Manuscripts, Hindi2