Encyclopedias, Almanacs, Transcripts, and Maps
- Monsters of Land, Sea, and Air
- Montague, Mary Wortley (1689-1762)
- Montezuma I
- Montgomery, Ruth (Schick)
- Móo, Queen
- Moody, Raymond Avery, Jr. (1944-)
- Mooneyes
- Mooneyes
- Moonsign Book
- Moore, Marcia (1928-1979)
- Moore, Ruth Ella (1903-1994)
- Mopses, Order of the
- Moraines
- Moral Status
- Morgawr
- Morien (or Morienus) (fl. 12th century C.E.)
- Moritz Benedikt Cantor
- Moritz Pasch
- Morley, Lawrence Whitaker (1920- )
- Mormonism (Church of Jesus Christ of Latter-Day Saints), Bioethics in