- M. Emmet Walsh (3 movies)
- M.C. Gainey (1 movie)
- Ma Dong-seok (1 movie)
- Maarten Römer (1 movie)
- Machine Gun Kelly (3 movies)
- Mackenzie Davis (2 movies)
- Mackenzie Foy (1 movie)
- Macon Blair (4 movies)
- Madalen Mills (2 movies)
- Madalina Anea (1 movie)
- Mădălina Diana Ghenea (1 movie)
- Maddie Corman (1 movie)
- Maddie Hasson (1 movie)
- Maddie Ziegler (3 movies)
- Madeleine McGraw (2 movies)
- Madeleine Nicholls (1 movie)
- Madeline Brewer (2 movies)
- Madeline Weinstein (1 movie)
- Madeline Zima (1 movie)
- Madison Arnold (1 movie)
- Madison Bailey (1 movie)
- Madison Bready (1 movie)
- Madison Davenport (1 movie)
- Madison Iseman (3 movies)
- Madison Rojas (1 movie)
- Mads Mikkelsen (4 movies)
- Mae Whitman (2 movies)
- Maggie Baird (1 movie)
- Maggie Gyllenhaal (1 movie)
- Maggie Q (1 movie)
- Maggie Smith (1 movie)
- Magne Furuholmen (1 movie)
- Magnus Krepper (1 movie)
- Magnus Millang (1 movie)
- Magnus Samuelsson (1 movie)
- Mahalia Jackson (1 movie)
- Mahershala Ali (2 movies)
- Mahesh Manjrekar (1 movie)
- Mahesh Pillai (1 movie)
- Maia Wilson (1 movie)
- Maika Monroe (1 movie)
- Maisie Williams (3 movies)
- Maïwenn (1 movie)
- Maja Aro (1 movie)
- Maja Rung (1 movie)
- Majid Essaidi (1 movie)
- Majur (1 movie)
- Makenzie Leigh (1 movie)
- Makgotso M (1 movie)
- Makram Khoury (1 movie)