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.
| Olivia Reis Actor | 1 productions |
| Olsen & Johnson Book Writer | 1 shows |
| Omari Wiles Choreographer | 1 shows |
| Op. 24 Actor | 1 productions |
| Ophelia Lovibond Actor | 1 productions |
| Orville Peck Actor | 1 productions |
| Orville Sherman Director | 1 productions |
| Oscar Nuñez Actor | 1 productions |
| Otis René Book Writer | 1 shows |
| Otto A. Harbach Orchestrator | 1 shows |
| Owen Hall Book Writer | 1 shows |
| Owen Murphy Lyricist | 1 shows |
| Oyoyo Joi Actor | 1 productions |
| P.J. Benjamin Actor | 1 productions |
| Pablo David Laucerica Actor | 1 productions |
| Paddy Stone Choreographer | 1 shows |
| Paige Smallwood Actor | 1 productions |
| Pamela Adlon Actor | 1 productions |
| Pamela Austin Actor | 1 productions |
| Pamela Clifford Actor | 1 productions |
| Paola Lázaro Actor | 1 productions |
| Paris Green Director | 1 shows |
| Pat Carroll Actor | 1 productions |
| Pat Creighton Actor | 1 productions |
| Pat Hingle Actor | 1 productions |
| Pat Rooney Sr. Actor | 1 productions |
| Pat Suzuki Actor | 1 productions |
| Patachou Actor | 1 shows |
| Patrena Murray Actor | 1 shows |
| Patrice Helene Actor, Director | 1 productions |
| Patricia Birch Choreographer, Director | 1 productions |
| Patricia Bloomfield Actor | 1 productions |
| Patricia Casey Actor | 1 productions |
| Patricia Delgado Choreographer | 1 shows |
| Patricia Elliott Actor | 1 productions |
| Patricia Greenwood Actor | 1 productions |
| Patricia Knop Book Writer | 1 shows |
| Patricia Resnick Book Writer | 1 shows |
| Patrick Ball Actor | 1 productions |
| Patrick Dunn Actor | 1 productions |
| Patrick Levis Actor | 1 productions |
| Patrick Marber Director | 1 shows |
| Patrick Oliver Jones Actor | 1 productions |
| Patrick Scott McDermott Actor | 1 productions |
| Patrick Vaill Actor | 1 productions |
| Patsy Abbott Actor | 1 productions |
| Patsy Ruth Miller Book Writer | 1 shows |
| Patti Jacob Composer, Lyricist | 1 shows |
| Patti Murin Actor | 1 shows |
| Patti Regan Actor | 1 productions |
| Patty Andrews Actor | 1 productions |
| Patty Fitzimmons Actor | 1 productions |
| Paul Webster Lyricist | 1 shows |
| Paul & Grace Hartman Actor | 1 productions |
| Paul Aaron Director | 1 shows |
| Paul Barbarin Book Writer | 1 shows |
| Paul Blake Book Writer | 1 shows |
| Paul Draper Actor | 1 productions |
| Paul England Actor | 1 shows |
| Paul Gerard Smith Book Writer | 1 shows |