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.
| Jessica Hecht Actor | 3 productions |
| Jessica Phillips Actor | 3 productions |
| Jessica Stone Actor, Director | 3 productions |
| Jet MacDonald Actor | 3 productions |
| Jim Jacobs Book Writer, Composer, Lyricist | 3 shows |
| Jim Lewis Book Writer | 3 shows |
| Jim Steinman Book Writer, Composer, Lyricist | 3 shows |
| Jo Swerling Book Writer | 3 shows |
| Jodi Benson Actor | 3 productions |
| Joe Calvan Actor | 3 productions |
| Joe Darion Book Writer, Lyricist | 3 shows |
| John Behlmann Actor | 3 productions |
| John Cameron Mitchell Actor, Book Writer | 3 productions |
| John Carrafa Choreographer | 3 shows |
| John Eric Parker Actor | 3 productions |
| John Gallagher Jr. Actor | 3 productions |
| John Garth Actor | 3 productions |
| John Lithgow Actor | 3 productions |
| John O'Farrell Book Writer | 3 shows |
| John Rubinstein Actor | 3 productions |
| John Scherer Actor | 3 productions |
| John Stamos Actor | 3 productions |
| John W. Bubbles Actor | 3 productions |
| John-Michael Lyles Actor | 3 productions |
| Jonathan Lucas Choreographer, Director | 3 productions |
| Jordan Dobson Actor | 3 productions |
| Jordan Donica Actor | 3 productions |
| Jordan Gelber Actor | 3 productions |
| Jordan Tyson Actor | 3 productions |
| Joseph Attles Actor | 3 productions |
| Joseph Bova Actor | 3 productions |
| Joseph Caruso Actor | 3 productions |
| Joseph Crawford Actor | 3 productions |
| Joseph Fields Book Writer | 3 shows |
| Joseph Hardy Director | 3 shows |
| Josh Groban Actor | 3 productions |
| Josh Rhodes Choreographer | 3 productions |
| Joshua Boone Actor | 3 productions |
| Joy Woods Actor | 3 productions |
| Julia Knitel Actor | 3 productions |
| Julie Andrews Actor | 3 productions |
| Julie Wilson Actor | 3 productions |
| June Cochrane Actor | 3 productions |
| June Havoc Actor | 3 productions |
| June Hawkins Actor | 3 productions |
| June Knight Actor | 3 productions |
| June Squibb Actor | 3 productions |
| Justin Bowen Actor | 3 productions |
| Justina Machado Actor | 3 productions |
| Karen Mason Actor | 3 productions |
| Karen Olivo Actor | 3 productions |
| Kate Buddeke Composer | 3 productions |
| Kate Jennings Grant Actor | 3 productions |
| Kate Reinders Actor | 3 productions |
| Kate Shindle Actor | 3 productions |
| Katherine McGrath Actor | 3 productions |
| Kathi Moss Actor | 3 productions |
| Kathlene Martyn Actor | 3 productions |
| Kathryn Lee Actor | 3 productions |
| Kathy Fitzgerald Actor | 3 productions |