| Name | Show | Year | Role | Character | Theater |
|---|---|---|---|---|---|
| Jack Ballintyne | Gigi | 1974 | Actor | Law Clerk | Heinz Hall |
| Ed Baytos | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Greg Begley | Gigi | 1974 | Actor | Heinz Hall | |
| Leilani Cerveris | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Colette | Gigi | 1974 | Writer | Based on the novel by | Heinz Hall |
| Ken Costigan | Gigi | 1974 | Actor | Receptionist | Heinz Hall |
| Etta Cox | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| F.Mitchell Dana | Gigi | 1974 | Designer | Lighting | Heinz Hall |
| Karen Daugherty | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Mark Diamond | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Tim DiLeo | Gigi | 1974 | Actor | Waiter | Heinz Hall |
| Paul Greeno | Gigi | 1974 | Actor | Heinz Hall | |
| Paul Greeno | Gigi | 1974 | Actor | Head Waiter / Telephone Installer / Maitre d'Hotel | Heinz Hall |
| Peter Hamilton | Gigi | 1974 | Artistic Staff | Choreographer | Heinz Hall |
| Niki Harris | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Richard Haskin | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| I.M. Hobson | Gigi | 1974 | Actor | Manuel | Heinz Hall |
| Karen Kahn | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Donald B. Kleinschmidt | Gigi | 1974 | Artistic Staff | Production Stage Manager | Heinz Hall |
| Fred Kolouch | Gigi | 1974 | Designer | Set Designer | Heinz Hall |
| Alan Jay Lerner | Gigi | 1974 | Writer | Book and Lyrics by | Heinz Hall |
| Frederick Loewe | Gigi | 1974 | Writer | Music by | Heinz Hall |
| Milton Lyon | Gigi | 1974 | Artistic Staff | Director and Musical Conductor | Heinz Hall |
| Ross Martin | Gigi | 1974 | Actor | Honore Lachailles | Heinz Hall |
| Barbara Moorefield | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Lenora Nemetz | Gigi | 1974 | Actor | Liane d'Exelmans | Heinz Hall |
| Susan Stone | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Cheryl Utsunomsiya | Gigi | 1974 | Actor | Ensemble | Heinz Hall |
| Jodi Welch | Gigi | 1974 | Actor | Ensemble | Heinz Hall |