| Author | Nationality | Profession |
|---|---|---|
| M. C. Escher | Dutch | Artist |
| M. C. Gainey | American | Actor |
| M. Emmet Walsh | American | Actor |
| M. Esther Harding | British | Psychologist |
| M. F. Husain | Artist | |
| M. F. K. Fisher | American | Writer |
| M. H. Abrams | Critic | |
| M. J. Hyland | English | Author |
| M. J. Rose | American | Author |
| M. John Harrison | English | Author |
| M. K. Hobson | American | Writer |
| M. Night Shyamalan | American | Director |
| M. Russell Ballard | American | Clergyman |
| M. Scott Peck | American | Psychologist |
| M. Stanton Evans | American | Journalist |
| M. Ward | American | Musician |
| M.I.A. | British | Musician |
| MC Hammer | American | Musician |
| Ma Huateng | ||
| Ma Jian | Chinese | Writer |
| Ma Jun | Chinese | Environmentalist |
| Ma Long | Chinese | Athlete |
| Ma Rainey | American | Musician |
| Ma Ying-jeou | Politician | |
| Maajid Nawaz | British | Activist |
| Mac Davis | American | Musician |
| Mac DeMarco | Canadian | Musician |
| Mac Miller | American | Musician |
| Mac Thornberry | American | Politician |
| Macaulay Culkin | American | Actor |
| Maceo Parker | American | Musician |
| Mack McLarty | American | Politician |
| Mackenzie Astin | American | Actor |
| Mackenzie Crook | English | Actor |
| Mackenzie Davis | Canadian | Actress |
| Mackenzie Foy | American | Actress |
| Mackenzie King | Canadian | Statesman |
| Mackenzie Phillips | American | Actress |
| Mackenzie Rosman | American | Actress |
| Macklemore | American | Musician |
| Macy Gray | American | Musician |
| Madalyn Murray O'Hair | American | Writer |
| Madame de Stael | ||
| Madchen Amick | American | Actress |
| Maddie Hasson | American | Actress |
| Maddie Ziegler | American | Dancer |
| Madeleine Albright | ||
| Madeleine L'Engle | American | Novelist |
| Madeleine M. Kunin | ||
| Madeleine Peyroux | American | Musician |