| Billy Crystal | Buddy Young Jr. |
| David Paymer | Stan Yankelman |
| Julie Warner | Elaine |
| Helen Hunt | Annie |
| Mary Mara | Susan |
| Jerry Orbach | Phil Gussman |
| Ron Silver | Larry Meyerson |
| Sage Allen | Mom |
| Jason Marsden | Buddy - Age 15 |
| Michael Weiner | Stan (Age 18) |
| Jackie Gayle | Gene |
| Carl Ballantine | Freddie |
| Slappy White | Joey |
| Jerry Lewis | Himself |
| Costin Cszimas | Acrobat |
| Phil Foreman | Uncle Julius |
| Cantor Chayim Frenkel | Cantor at Funeral |
| Birl Johns | TV Show Dancer |
| Peter Kim | 1st Korean |
| Rick Logan | "Buddy Buddy" Singer |
| Maria A. Ferrari Olivo | Fat Guy's Wife |
| Joey Shea | MC |
| William Yamadera | Japanese Client |
| Larry Gelman | Mr. Gimbel |
| Kay Freeman | Mrs. Gimbel |
| Howard Mann | Stage Manager |
| Julius Branca | Stage Manager |
| Liz Georges | Script Girl |
| William Wendell | Announcer |
| Hartley Haverty | Susan-Age 6 |
| Will Jordan | Ed Sullivan |
| Josh Byrne | Abie - Age 6 |
| Tim Russ | A.D. |
| Ben Diskin | Stan - Age 9 |
| Irving Wasserman | Uncle Moe |
| Michael Ben-Edward | Fat Guy in Audience |
| Richard Mehana | Sidney |
| Mark Lonow | Producer |
| Conrad Janis | Director |
| Marc Shaiman | Lucky Zinberg |
| Jan Lucas | Karen (Casting Director) |
| Daniel Tisman | Reece |
| Greg Paik | 2nd Korean |
| Eugene Kaufmann | Old Man |
| Miranda Garrison | Apacke Dancer |
| Alberto Toledano | Apacke Dancer |
| Richard Kind | Reporter |
| Edith Fields | Woman in Commercial |
| Adam Goldberg | Eugene Gimbel |
| Talbot Perry Simons | Man at Catskills |
| Lonnie Burr | TV Show Dancer |
| Randy Doney | TV Show Dancer |
| Joe A. Giamalva | TV Show Dancer |
| Shadoe Stevens | Fred |
| Bert Copello | Sullivan A.D. |
| Lindsay Crystal | Screaming Girl |
| Jerry Gadette | Stage Hand |
| Lowell Ganz | 1st Writer |
| Babaloo Mandel | 2nd Writer |
| Bob Yerkes | Acrobat |
| Marinela Cimpoeru | Acrobat |
| Voinea Dumitru | Acrobat |
| Adrian Smertcov | Acrobat |
| Steve Kravitz | Young Comic |
| Randy Crenshaw | "Buddy Buddy" Singer |
| Geoff Koch | "Buddy Buddy" Singer |
| Steve Lively | "Buddy Buddy" Singer |
| Moira Kelly | Actor |
| Joe Mays | Actor |
| Gary Grossman | Backstage Man |
Technical Credits
| Billy Crystal | Director,Producer,Screenwriter |
| Kent Beyda | Editor |
| Julie A. Bloom | Asst. Director |
| Albert Brenner | Production Designer |
| Pam Dixon | Casting |
| Lowell Ganz | Executive Producer,Screenwriter |
| Dave Kelsey | Special Effects |
| Kathe Klopp | Set Decoration/Design |
| Babaloo Mandel | Executive Producer,Screenwriter |
| Peter Montagna | Makeup |
| Ruth Myers | Costumes/Costume Designer |
| Donald Peterman | Cinematographer |
| Peter Schindler | Co-producer |
| Marc Shaiman | Score Composer |
| Carol Wood | Art Director |
