Encyclopedias, Almanacs, Transcripts, and Maps
- Macroscelidea (Sengis)
- Madagascaran Toadlets (Scaphiophrynidae)
- Madhhab
- Madrasah
- Magen David
- maggot
- Magic: Magic in East Asia
- Magic: Magic in Eastern Europe
- Magic: Magic in Greco-Roman Antiquity
- Magic: Magic in Indigenous Societies
- Magic: Magic in Islam
- Magic: Magic in Medieval and Renaissance Europe
- Magic: Magic in South Asia
- Magic: Theories of Magic
- Magnetic Separation
- Magnetism and Magnets
- Magpie-Shrikes (Cracticidae)
- Mahāmudrā
- Mahāsāṃghika
- Mahāsiddhas