4,750 actors with a page here, the busiest first, counted by the productions and shows we hold for each. Another 24,181 people are named in cast lists and have no page yet.
| Marguerite Silva Actor | 1 productions |
| Maria Di Gerlando Actor | 1 productions |
| Maria Elena Ramirez Actor | 1 productions |
| Maria Rosa Actor | 1 shows |
| Maria Tallchief Actor | 1 productions |
| Maria-Christina Oliveras Actor | 1 productions |
| Marian Baird Actor | 1 productions |
| Marian Burke Actor | 1 productions |
| Marianna Gailus Actor | 1 productions |
| Marilyn Berry Actor | 1 productions |
| Marilynn Bradley Actor | 1 productions |
| Marina Kondo Actor | 1 productions |
| Marinda Anderson Actor | 1 productions |
| Marine Jahan Actor | 1 productions |
| Marion Bell Actor | 1 productions |
| Marion Claire Actor | 1 productions |
| Marion Clayton Actor | 1 productions |
| Marion Green Actor | 1 productions |
| Marion J. Caffey Actor | 1 productions |
| Marion Lorne Actor | 1 productions |
| Marion Sunshine & Florence Tempest Actor | 1 productions |
| Mariska Hargitay Actor | 1 productions |
| Marjan Neshat Actor | 1 productions |
| Marjorie Main Actor | 1 productions |
| Mark Aldon Actor | 1 productions |
| Mark Consuelos Actor | 1 productions |
| Mark Hamill Actor | 1 productions |
| Mark Harelik Actor | 1 productions |
| Mark Karl Actor | 1 productions |
| Mark Lambert Actor | 1 productions |
| Mark Mitrano Actor | 1 productions |
| Mark Plant Actor | 1 productions |
| Mark Strong Actor | 1 productions |
| Marley Lianne Gomes Actor | 1 productions |
| Marsha Kramer Actor | 1 productions |
| Martin Gabel Actor | 1 productions |
| Martin Jarvis Actor | 1 productions |
| Martine Allard Actor | 1 productions |
| Marty Drake Actor, Director | 1 productions |
| Marty Lauter Actor | 1 productions |
| Mary Eaton Actor | 1 productions |
| Mary Ellis Actor | 1 productions |
| Mary Healy Actor | 1 productions |
| Mary Jane Broadhurst Actor | 1 productions |
| Mary Jane Walsh Actor | 1 productions |
| Mary Klick Actor | 1 productions |
| Mary Mason Actor | 1 productions |
| Mary Neely Actor | 1 productions |
| Mary Parker Actor | 1 shows |
| Mary Stuart Masterson Actor | 1 productions |
| Mary Tyler Moore Actor | 1 shows |
| Maryam Myika Day Actor | 1 productions |
| Mason Alexander Park Actor | 1 productions |
| Mason Reeves Actor | 1 productions |
| Mathilde Cottrelly Actor | 1 productions |
| Matt Kurzyniec Actor | 1 productions |
| Matthew August Jeffers Actor | 1 productions |
| Matthew Furtado Actor | 1 productions |
| Maudine Brown Actor | 1 productions |
| Maulik Pancholy Actor | 1 productions |