m
- Magnavox (1917–) [1]
- Édouard Manet (French, 1832–1883) [4]
- Louis Marcoussis (French, 1883–1941) [2]
- Master of Riglos (Spanish, Aragonese, active 1435–1460) [1]
- Master of the Saint Ursula Legend (German, active c. 1485–c. 1515) [1]
- Henri Matisse (French, 1869–1954) [59]
- Alfred Henry Maurer (American, 1868–1932) [10]
- Francis McCarthy (American, 1921–2005) [5]