- Joseph (Son of Jacob)2
- Judaism--Customs and practices2
- Jārbardī, Fakhr al-Dīn Aḥmad ibn al-ḥasan, d. 1345. Mughnī fī ʻilm al-naḥw2
- Kaddish2
- Karaite law2
- Letter writing, Turkish2
- Manuscripts, German2
- Manuscripts, Japanese2
- Manuscripts, Judeo-Arabic2
- Manuscripts, Sanskrit2
- Manuscripts, Syriac2
- Marriage law2
- Medicine, Ancient2
- Mirqāt al-wuṣūl (Hüsrev, Molla)2
- Mishnah. Zeraʻim2
- Morocco2
- Mukhtār lil-fatwá (Mawṣilī, ʻAbd Allāh ibn Maḥmūd)2
- Mulakhkhaṣ fī al-hayʼah (Jaghmīnī, Maḥmūd ibn Muḥammad)2
- Muqniʻah (Mufīd, Muḥammad ibn Muḥammad)2
- Musical notation2