- Medicine, Magic, mystic, and spagiric1
- Medicine--Formulae, receipts, prescriptions1
- Mehmed II, Sultan of the Turks, 1432-14811
- Metal clasps1
- Metaphysics1
- Mexico--Chiapas1
- Mexico--Michoacán de Ocampo1
- Michael (Archangel)1
- Michaelmas1
- Middle East1
- Middle East--Jerusalem1
- Miniature books1
- Missal (Catholic Church)1
- Missions1
- Monasteries1
- Monasterio de San Jerónimo de Monte Olivete (Sant Pere de Ribes, Spain)1
- Monasterio de San Jerónimo de la Murtra (Badalona, Spain)1
- Monasterio de San Jerónimo del Valle de Hebrón (Barcelona, Spain)1
- Monasticism and religious orders for women1
- Monasticism and religious orders--Rules1