- Ishārāt wa-al-tanbīhāt (Avicenna)1
- Islam--Customs and practices1
- Islamic Empire1
- Islamic bindings1
- Islamic ethics1
- Islamic illumination of books and manuscripts1
- Jawharī, Ismāʻīl ibn Ḥammād, -1003? Tāj al-lughah wa-ṣiḥāḥ al-ʻArabīyah1
- John, the Baptist, Saint1
- Judges (Islamic law)1
- Jurjānī, ʻAlī ibn Muḥammad, al-Sayyid al-Sharīf, 1340-1413. Ḥāshiyah ʻalá Sharḥ Shamsīyah1
- Kalbī, Diḥyah ibn Khalīfah, -approximately 6701
- Kashshāf (Zamakhsharī, Maḥmūd ibn ʻUmar)1
- Khiḍr (Legendary character)1
- Kufic1
- Kāfiyah (Ibn al-Ḥājib, ʻUthmān ibn ʻUmar)1
- Language and languages--Etymology1
- Language and languages--Style1
- Manāzil al-sāʼirīn (Anṣārī al-Harawī, ʻAbd Allāh ibn Muḥammad)1
- Marriage (Islamic law)1
- Masjid al-Aqṣá (Jerusalem)1