| Name | Show | Year | Role | Character | Theater |
|---|---|---|---|---|---|
| Mark Diamond | The King and I | 1974 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | The Student Prince | 1974 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | West Side Story | 1974 | Actor | Toro | Heinz Hall |
| Mark Diamond | Brigadoon | 1974 | Actor | Sword Dancer | Heinz Hall |
| Mark Diamond | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | South Pacific | 1974 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | Guys and Dolls | 1975 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | Where's Charlie? | 1975 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | A Little Night Music | 1975 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | Can-Can | 1975 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | Fiddler on the Roof | 1975 | Actor | Ensemble | Heinz Hall |