Encyclopedias, Almanacs, Transcripts, and Maps
- Modernism: Christian Modernism
- Modernism: Islamic Modernism
- Moggaliputtatissa
- Mogul Empire
- Mohilever, Shemuʾel
- Möhler, Johann Adam
- Mohs scale of hardness
- Mokosh
- Mokṣa
- Mole Salamanders (Ambystomatidae)
- Mole-Limbed Wormlizards (Bipedidae)
- Moles, Shrew Moles, and Desmans (Talpidae)
- Molina, Dr. Mario Jose (1943 – ) Mexican Chemist
- moment of force
- Monarch Butterfly
- Monarch Flycatchers (Monarchidae)
- Monasticism: An Overview
- Monasticism: Buddhist Monasticism
- Monasticism: Christian Monasticism
- Mongol Religions