7,133 people 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.
| Mary Healy Actor | 1 productions |
| Mary Jane Broadhurst Actor | 1 productions |
| Mary Jane Walsh Actor | 1 productions |
| Mary Klick Actor | 1 productions |
| Mary Kyte Choreographer | 1 shows |
| Mary Lewis Composer | 1 shows |
| Mary Mason Actor | 1 productions |
| Mary Milburn Composer | 1 shows |
| Mary Neely Actor | 1 productions |
| Mary Parker Actor | 1 shows |
| Mary Read Choreographer | 1 shows |
| Mary Stuart Masterson Actor | 1 productions |
| Mary Tyler Moore Actor | 1 shows |
| Maryam Myika Day Actor | 1 productions |
| Masi Asare Lyricist | 1 shows |
| Mason Alexander Park Actor | 1 productions |
| Mason Reeves Actor | 1 productions |
| Mathilde Cottrelly Actor | 1 productions |
| Matt August Director | 1 shows |
| Matt Brooks Book Writer | 1 shows |
| Matt Cowart Director | 1 shows |
| Matt Gould Book Writer, Composer | 1 shows |
| Matt Kurzyniec Actor | 1 productions |
| Matt Stone Book Writer, Composer, Lyricist | 1 shows |
| Matt West Choreographer | 1 productions |
| Matthew August Jeffers Actor | 1 productions |
| Matthew Furtado Actor | 1 productions |
| Matthew Lopez Book Writer | 1 shows |
| Maudine Brown Actor | 1 productions |
| Maulik Pancholy Actor | 1 productions |
| Maureen McNamara Actor | 1 shows |
| Maureen Stapleton Actor | 1 productions |
| Maurice Brenner Actor | 1 productions |
| Maurice Burke Actor | 1 productions |
| Maurice De Packh Orchestrator | 1 shows |
| Maurice Evans Actor | 1 productions |
| Maurice Hines Actor | 1 productions |
| Maurice Levine Cast: David Kurlan Director | 1 shows |
| Max Adrian Actor | 1 productions |
| Max Freeman Director | 1 shows |
| Max Hampton Book Writer | 1 shows |
| Max Kirby Actor | 1 productions |
| Max Liebman Director | 1 shows |
| Max Reinhardt Director | 1 shows |
| Max Roll Actor | 1 productions |
| Max Scheck Choreographer | 1 productions |
| Max Wolf Friedlich Book Writer | 1 shows |
| Maxene Andrews Actor | 1 productions |
| Maxine Fox Composer | 1 shows |
| May Edouin Actor | 1 productions |
| Maya Boyd Actor | 1 productions |
| Maya Kazzaz Actor | 1 productions |
| Maya Rudolph Actor | 1 productions |
| Maya West Actor | 1 productions |
| Meg Stalter Actor | 1 productions |
| Meighan Gerachis Actor | 1 productions |
| Mel Semé Actor | 1 productions |
| Mel Shapiro Book Writer, Director | 1 shows |
| Mel Tolkin Lyricist | 1 shows |
| Melinda Roy Choreographer | 1 shows |