- Marriage--Religious aspects--Islam1
- Martellini, Vincenzio1
- Martini, Giovanni1
- Martini, Girolamo1
- Martino, Barone di1
- Martino, Odino S., active 15th century1
- Mary Magdalene, Saint1
- Mary, Blessed Virgin, Saint, in the liturgy1
- Masjid al-Aqṣá (Jerusalem)1
- Massachusetts--Northampton1
- Massachusetts--Wellesley1
- Massi, Francesca1
- Materia medica, Vegetable1
- Mattei, Teo1
- Matteo, Bernardo di1
- Maḥbūbī, Maḥmūd ibn ʻUbayd Allāh, -1344 or 1345. Wiqāyat al-riwāyah fī masāʼil al-Hidāyah1
- Maḥbūbī, ʻUbayd Allāh ibn Masʻūd, -1346 or 1347. Wishāḥ fī al-maʻānī wa-al-bayān1
- Mecco, Francesca di1
- Mecco, Xalento di1
- Medea, consort of Aegeus, King of Athens (Mythological character)1