- Islam--Customs and practices1
- Islamic astronomy1
- Islamic bindings1
- Islamic calendar1
- Islamic ethics1
- Islamic learning and scholarship1
- Islamic poetry1
- Jidd Ḥafṣī, ʻAlī ibn Luṭf Allāh, active 17th century-18th century1
- Jārūdī, Nāṣir ibn Muḥammad, active 18th century1
- Jīlī, ʻAbd al-Karīm ibn Ibrāhīm, 1365 or 1366- Risālat al-Tawḥīd1
- Kabāʼir (Muḥammad ibn ʻAbd al-Wahhāb)1
- Kharijites1
- Khiḍr (Legendary character)1
- Khūjahʹzādah, ʻAbd al-Naṣīr ibn ʻAbd Allāh, active 16th century. Taḥrīrāt ʻalá al-Ṭarīqah al-Muḥammadīyah1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Liturgics1
- Lumʻah al-Dimashqīyah (Shahīd al-Awwal, Muḥammad ibn Makkī)1
- Manuscripts, Avestan1
- Marriage (Islamic law)1
- Metaphysics1