- Islamic sermons, Arabic1
- Isra' and Mi`raj of the Prophet Muhammad1
- Jawharat al-tawḥīd (Laqānī, Ibrāhīm ibn Ibrāhīm)1
- Jaʻbarī, Arslān ibn Yaʻqūb, -1300. Risālat al-tawḥīd1
- Jumʻah1
- Kamāl al-Dīn Muḥammad ibn Muḥammad, -1418. Naẓm Nukhbat al-fikar fī muṣṭalaḥ ahl al-athar1
- Karmī, Marʻī ibn Yūsuf, -1623 or 16241
- Kharijites1
- Khiḍr (Legendary character)1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Language and languages--Philosophy1
- Learning and scholarship1
- Libraries1
- Liquor laws (Islamic law)1
- Logic, Medieval1
- Mahdi1
- Manuscripts, Javanese1
- Martyn, Henry, 1781-18121
- Mashāʻir (Ṣadr al-Dīn Shīrāzī, Muḥammad ibn Ibrāhīm)1
- Mawāhibī, Ibrāhīm ibn Maḥmūd, -1502 or 1503. Uṣūl muqaddimāt al-uṣūl1