- Myrtle Vail (2 movies)
- Myrtle Stedman (1 movie)
- Myron Healey (1 movie)
- Myrna Loy (2 movies)
- Myra Keaton (1 movie)
- Murvyn Vye (1 movie)
- Murray Alper (1 movie)
- Murdock MacQuarrie (1 movie)
- Mrs. Leslie Carter (1 movie)
- Mr. Burnhett (1 movie)
- Morton Selten (2 movies)
- Morton Lowry (1 movie)
- Morris Harvey (1 movie)
- Morris Carnovsky (3 movies)
- Moroni Olsen (3 movies)
- Morland Graham (2 movies)
- Morgan Wallace (2 movies)
- Morgan Jones (1 movie)
- Morgan Farley (1 movie)
- Morgan Conway (1 movie)
- Moore Marriott (1 movie)
- Monty Woolley (1 movie)
- Monty O'Grady (1 movie)
- Monte Vandergrift (1 movie)
- Monte Landis (1 movie)
- Monte Collins (1 movie)
- Monte Carter (1 movie)
- Monte Blue (2 movies)
- Montagu Love (2 movies)
- Monroe Owsley (1 movie)
- Monica Bannister (1 movie)
- Mona Ray (1 movie)
- Mona McKinnon (1 movie)
- Mona Knox (1 movie)
- Mona Barrie (1 movie)
- Moms Mabley (2 movies)
- Molly McCarthy (1 movie)
- Molly Fisher (1 movie)
- Moe Howard (5 movies)
- Mitzi Green (1 movie)
- Mitchell Lewis (2 movies)
- Mischa Auer (2 movies)
- Miriam Hopkins (1 movie)
- Mira McKinney (1 movie)
- Minor Watson (1 movie)
- Minerva Urecal (3 movies)
- Mimmo Poli (1 movie)
- Mimmo Palmara (1 movie)
- Mimi Aguglia (2 movies)
- Milton Kibbee (3 movies)