- Maika Monroe (3 movies)
- Makenzie Vega (3 movies)
- Malcolm Goodwin (3 movies)
- Marc Blucas (3 movies)
- Marc Evan Jackson (3 movies)
- Marcella Lentz-Pope (3 movies)
- Marcia Bennett (3 movies)
- Mare Winningham (3 movies)
- Maria Dizzia (3 movies)
- Maria Zambrana (3 movies)
- Marian Seldes (3 movies)
- Marianne Jean-Baptiste (3 movies)
- Marilyn Norry (3 movies)
- Marin Hinkle (3 movies)
- Marin Ireland (3 movies)
- Mark Camacho (3 movies)
- Mark Donovan (3 movies)
- Mark Famiglietti (3 movies)
- Mark Ivanir (3 movies)
- Mark Pellegrino (3 movies)
- Mark Rylance (3 movies)
- Mark Smith (3 movies)
- Marko Caka (3 movies)
- Marlene Forte (3 movies)
- Martin Kove (3 movies)
- Martin Landau (3 movies)
- Martin Savage (3 movies)
- Martin Wuttke (3 movies)
- Mary Birdsong (3 movies)
- Mary Lynn Rajskub (3 movies)
- Mary McDonnell (3 movies)
- Massi Furlan (3 movies)
- Mathieu Kassovitz (3 movies)
- Matt Cornwell (3 movies)
- Matt Gerald (3 movies)
- Matt Lanter (3 movies)
- Matthew Marsden (3 movies)
- Matthew Walker (3 movies)
- Matthew Wood (3 movies)
- Matthias Schoenaerts (3 movies)
- Maurice Compte (3 movies)
- Maury Sterling (3 movies)
- Max Greenfield (3 movies)
- Max Irons (3 movies)
- Max Ryan (3 movies)
- Megan Mullally (3 movies)
- Megumi Hayashibara (3 movies)
- Megumi Ogata (3 movies)
- Melissa George (3 movies)
- Melissa Ordway (3 movies)