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- Ewan MacColl
- Michael MacLennan
- Wendy MacLeod
- George Macropedius, (1487–1558)
- Ellen McLaughlin
- Monica Malek-Yonan
- Rosie Malek-Yonan
- David Mamet, (born 1947) (United States)
- Henning Mankell (Sweden)
- Klaus Mann
- Frank Marcus (England), (1928–1996)
- William Marchant, (United States), (1923–1995)
- Donald Margulies
- Pierre de Marivaux
- Christopher Marlowe, (1564–1593)
- John Marston, (1576–1634)
- Jane Martin (United States) (pen name for unknown playwright)
- William Somerset Maugham
- Vladimir Mayakovsky (Russia)
- Marius von Mayenburg
- Dick McBride, (born 1928)
- Martin McDonagh, (born 1970)
- Frank McGuinness
- Sally McLean
- Scott McMorrow
- Terrence McNally, (born 1939)
- Mark Medoff
- Charles L. Mee
- Leonard Melfi (United States)
- Menander
- David Mercer
- George Middleton (1880–1967) (United States)
- Thomas Middleton (born 1850) (England)
- Arthur Miller (American. 1915–2005)
- Willy Millowitsch
- Octave Mirbeau (1848–1917)
- Vilhelm Moberg (1898–1973) (Sweden)
- Molière, (1622–1673)
- Jose Zorrilla y Moral
- Félix Morisseau-Leroy (Moriso Lewa), (1912–1998)
- Melvyn Morrow
- Dr. Narendra Mohan
- Agustus Montrose (1830–1899) (England)
- John Mortimer (1923–2009) (England)
- Tad Mosel
- Itamar Moses
- Dimitrios Mpogris, (Greece), ( 1890–1964 )
- Sławomir Mrożek (*Poland*/France)
- Heiner Müller (Germany)
- Kaj Munk (Denmark)
- Jimmy Murphy
- Tom Murphy
- Tommy Murphy
- Gary Murway (composer/playwright)
- Robert Musil
Read more about this topic: List Of Playwrights