- Jewish philosophy1
- Jighmīnī, Maḥmūd ibn Muḥammad, -1221? Mulakhkhaṣ fī al-hayʼah1
- Khulāṣat al-ḥisāb (ʻĀmilī, Bahāʼ al-Dīn Muḥammad ibn Ḥusayn)1
- Labyrinths1
- Logic1
- Magic1
- Manuscripts, Armenian1
- Manuscripts, English1
- Manuscripts, English (Middle)1
- Manuscripts, Judeo-Arabic1
- Manuscripts, Oriental1
- Mary, Blessed Virgin, Saint1
- Mathematics, Arab1
- Mathematics, Greek1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Mediterranean Region1
- Metaphysics1
- Metaphysics (Aristotle)1
- Meteorologica (Aristotle)1
- Meteorology1