| Name | Show | Year | Role | Character | Theater |
|---|---|---|---|---|---|
| Elman Anderson | The Most Happy Fella | 1976 | Artistic Staff | Musical Conductor | Heinz Hall |
| Laura Lynn Anderson | The Most Happy Fella | 1976 | Actor | Tessie | Heinz Hall |
| Norman Atkins | The Most Happy Fella | 1976 | Actor | Tony | Heinz Hall |
| Leigh Beery | The Most Happy Fella | 1976 | Actor | Rosabella | Heinz Hall |
| John Bishop | The Most Happy Fella | 1976 | Artistic Staff | Director | Heinz Hall |
| Catherine Bomstein | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Alexandra Borrie | The Most Happy Fella | 1976 | Actor | Cleo | Heinz Hall |
| Lori Cardile | The Most Happy Fella | 1976 | Actor | Waitress | Heinz Hall |
| Chuck Davis | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Diane Fratantoni | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Stacey Frattaroli | The Most Happy Fella | 1976 | Actor | Tessie | Heinz Hall |
| Paul Greeno | The Most Happy Fella | 1976 | Actor | The Cashier | Heinz Hall |
| Paul Greeno | The Most Happy Fella | 1976 | Actor | The Cashier | Heinz Hall |
| Joe Gustern | The Most Happy Fella | 1976 | Actor | Pasquale | Heinz Hall |
| Peter Hamilton | The Most Happy Fella | 1976 | Artistic Staff | Choreography | Heinz Hall |
| Niki Harris | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Richard Haskin | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Scott Holmes | The Most Happy Fella | 1976 | Actor | Al | Heinz Hall |
| Sidney Howard | The Most Happy Fella | 1976 | Writer | """Based on """"They Knew What They Wanted"""" by""" | Heinz Hall |
| Ronnie Ingelido | The Most Happy Fella | 1976 | Actor | Gussie | Heinz Hall |
| Kathleen Jaworski | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Kathleen Knipling | The Most Happy Fella | 1976 | Actor | Waitress | Heinz Hall |
| Fred Kolouch | The Most Happy Fella | 1976 | Designer | Scenery/Lighting Designed by | Heinz Hall |
| Robert Koval | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Jamie Lightstone | The Most Happy Fella | 1976 | Actor | Clem | Heinz Hall |
| Frank Loesser | The Most Happy Fella | 1976 | Writer | Book, Music and Lyrics by | Heinz Hall |
| Marty McDonough | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Allen Michael | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Kathleen Moore | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Joyce Olson | The Most Happy Fella | 1976 | Actor | Marie | Heinz Hall |
| Bruce Pitney | The Most Happy Fella | 1976 | Actor | The Postman | Heinz Hall |
| Robert Polenz | The Most Happy Fella | 1976 | Actor | Ciccio | Heinz Hall |
| Todd Ray | The Most Happy Fella | 1976 | Actor | Gussie | Heinz Hall |
| Winifred Sager | The Most Happy Fella | 1976 | Actor | Waitress | Heinz Hall |
| Dorothy Stanley | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Don Stewart | The Most Happy Fella | 1976 | Actor | Joe | Heinz Hall |
| Timothy Strong | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Merle Stutzman | The Most Happy Fella | 1976 | Actor | Jake | Heinz Hall |
| Gary Sutcliff | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| James Tushar | The Most Happy Fella | 1976 | Actor | Herman | Heinz Hall |
| Jane Upton | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Carol Wade | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Thom Warren | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Jean Weigel | The Most Happy Fella | 1976 | Artistic Staff | Production Stage Manager | Heinz Hall |
| Jodi Welch | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Paul Arthur Welterlen | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Ted White | The Most Happy Fella | 1976 | Actor | Giuseppe | Heinz Hall |
| Sara Wiedt | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Nancy Williams | The Most Happy Fella | 1976 | Actor | Ensemble | Heinz Hall |
| Lee Winston | The Most Happy Fella | 1976 | Actor | The Doctor | Heinz Hall |