Encyclopedias, Almanacs, Transcripts, and Maps
- Marty, Anton (1847–1914)
- Martyr, Peter (1459–1526)
- Marubo
- Maruli?, Marko (1450–1524)
- Marx, Karl (1818–1883)
- Marxist Philosophy
- Mary I 1516–1558 Queen of England
- Mary Stuart 1542–1587 Queen of Scots
- Maryknoll Order
- Mas Canosa, Jorge (1939–1997)
- Masaccio 1401–ca. 1428 Italian Painter
- Masaryk, Tomáš Garrigue (1850–1937)
- Masferrer, Alberto (1868–1932)
- Mashco
- Masira Island
- Masonic Orders
- MASS NOUN
- Massera, Emilio Eduardo (1925–)
- Massera, José Pedro (1866–1942)
- Masters of Metal: Introduction