
| Judd Hirsch | ... | Alex Reiger (114 episodes, 1978-1983) |

| Danny DeVito | ... | Louie De Palma (114 episodes, 1978-1983) |
 | Marilu Henner | ... | Elaine O'Connor-Nardo (114 episodes, 1978-1983) |

| Tony Danza | ... | Tony Banta (114 episodes, 1978-1983) |
 | J. Alan Thomas | ... | Jeff Bennett (114 episodes, 1978-1983) |

| Christopher Lloyd | ... | Reverend Jim Ignatowski (84 episodes, 1978-1983) |

| Andy Kaufman | ... | Latka Gravas / ... (79 episodes, 1978-1983) |
 | Jeff Conaway | ... | Bobby Wheeler (50 episodes, 1978-1982) |

| Randall Carver | ... | John Burns (22 episodes, 1978-1979) |
 | T.J. Castronova | ... | Tommy Jeffries (19 episodes, 1979-1983) |

| Carol Kane | ... | Simka Dahblitz-Gravas / ... (15 episodes, 1980-1983) |
 | Gene LeBell | ... | Referee / ... (5 episodes, 1979-1983) |
 | Rhea Perlman | ... | Zena Sherman (5 episodes, 1979-1982) |
 | Al Rosen | ... | Cabbie (5 episodes, 1982-1983) |
 | Jimmy Lennon Sr. | ... | Himself (4 episodes, 1981-1983) |
 | Ed. Weinberger | ... | Boxing Fan / ... (3 episodes, 1978-1982) |

| Susan Kellermann | ... | Greta Gravas (3 episodes, 1979-1982) |
 | Louise Lasser | ... | Phyllis Bornstein Consuelos / ... (3 episodes, 1980-1982) |
 | Melanie Gaffin | ... | Jennifer (3 episodes, 1982-1983) |

| David Mendenhall | ... | Jason (3 episodes, 1982-1983) |

| Vincent Schiavelli | ... | Reverend Gorky (3 episodes, 1982-1983) |

| Jill Jaress | ... | Airline Attendant / ... (2 episodes, 1978-1982) |
 | Michael Mann | ... | Jim's Passenger / ... (2 episodes, 1978-1981) |

| Talia Balsam | ... | Cathy Consuelos (2 episodes, 1978-1980) |
 | Suzanne Kent | ... | Angela Matusa (2 episodes, 1978-1979) |
 | Rusdi Lane | ... | Rudy / ... (2 episodes, 1978-1979) |
 | George Reynolds | ... | Cabdriver (2 episodes, 1978-1979) |
 | Paula Victor | ... | Mrs Hazeltine / ... (2 episodes, 1978-1979) |
 | Ellen Regan | ... | Suzanne / ... (2 episodes, 1978) |
 | Charles Thomas Murphy | ... | Customer / ... (2 episodes, 1979-1983) |
 | Dick Miller | ... | Ernie the Waiter / ... (2 episodes, 1979-1982) |

| Jack Gilford | ... | Joe Reiger (2 episodes, 1979-1981) |
 | John Petlock | ... | Board Chairman / ... (2 episodes, 1979-1981) |
 | Marc Anthony Danza | ... | Brian Sims (2 episodes, 1979-1980) |
 | Walter Olkewicz | ... | Tom / ... (2 episodes, 1980-1983) |

| Andrea Marcovicci | ... | Emily (2 episodes, 1981-1982) |
 | Ian Praiser | ... | Doctor / ... (2 episodes, 1981-1982) |
 | Carmine Caridi | ... | Lou-Lou / ... (2 episodes, 1981) |
 | Julia DeVito | ... | Louie's Mother (2 episodes, 1981) |
 | Murphy Cross | ... | Judy Griffith (2 episodes, 1982-1983) |

| Anne De Salvo | ... | Vicki / ... (2 episodes, 1982-1983) |
 | Robert Moberly | ... | Waiter (2 episodes, 1982-1983) |
 | Wallace Shawn | ... | Arnie / ... (2 episodes, 1982-1983) |
 | Peter Elbling | ... | Mascha (2 episodes, 1982) |
 | J. Pat O'Malley | ... | Tom (2 episodes, 1982) |
 | Gary Quinn | ... | The Bellman / ... (2 episodes, 1982) |
 | Wendell Wright | ... | Policeman / ... (2 episodes, 1982) |
|
| James L. Brooks | .... | executive producer (109 episodes, 1978-1983) |
| Stan Daniels | .... | executive producer (109 episodes, 1978-1983) |
| Ed. Weinberger | .... | executive producer (109 episodes, 1978-1983) |
| Richard Sakai | .... | associate producer / producer / ... (87 episodes, 1979-1983) |
| Glen Charles | .... | producer (62 episodes, 1978-1982) |
| Les Charles | .... | producer (62 episodes, 1978-1982) |
| Ken Estin | .... | producer (43 episodes, 1981-1983) |
| Cary Matsumura | .... | associate producer (24 episodes, 1982-1983) |
| Sam Simon | .... | producer (24 episodes, 1982-1983) |
| Budd Cherry | .... | associate producer (20 episodes, 1978-1979) |
| David Davis | .... | executive producer (20 episodes, 1978-1979) |
| Greg Nierman | .... | associate producer (20 episodes, 1981-1982) |
| Howard Gewirtz | .... | producer (19 episodes, 1981-1982) |
| Ian Praiser | .... | producer (19 episodes, 1981-1982) |
|
| Robin Green | .... | associate producer (unknown episodes) |
| |
|
| James L. Brooks | .... | executive consultant / executive creative consultant (107 episodes, 1978-1983) |
| Gil Clasen | .... | technical coordinator (106 episodes, 1978-1983) |
| David Davis | .... | title visualization / executive consultant (86 episodes, 1979-1983) |
| David Lloyd | .... | executive script consultant / executive story editor (71 episodes, 1979-1983) |
| Donna Wheeler | .... | assistant: Mr. Daniels (65 episodes, 1978-1981) |
| Robin Chambers | .... | talent coordinator / assistant: Mr. Daniels (64 episodes, 1978-1981) |
| Barbara Duncan | .... | assistant: Mr. Daniels / talent coordinator (63 episodes, 1980-1983) |
| Mark Harrah | .... | assistant: Mr. Daniels (63 episodes, 1980-1983) |
| Rosemary Dorsey | .... | script supervisor (62 episodes, 1978-1983) |
| Judi Brown | .... | script supervisor (45 episodes, 1979-1981) |
| Ken Estin | .... | program consultant / story editor (45 episodes, 1979-1981) |
| Sandra Lovelace | .... | assistant: Mr. Daniels (44 episodes, 1980-1983) |
| Barry Kemp | .... | executive script consultant (42 episodes, 1979-1981) |
| Cathy Clark | .... | assistant: Mr. Daniels (40 episodes, 1979-1982) |
| Elizabeth Hill | .... | assistant: Mr. Daniels (32 episodes, 1979-1981) |
| Dixie Reinhardt | .... | assistant: Mr. Daniels (24 episodes, 1979-1980) |
| H. Adele Woodson | .... | assistant: Mr. Daniels (24 episodes, 1979-1980) |
| Ronald E. Frazier | .... | production executive (23 episodes, 1978-1979) |
| Kimberly Allen | .... | assistant: Mr. Daniels (22 episodes, 1982-1983) |
| Sharon Feldstein | .... | assistant: Mr. Daniels (22 episodes, 1982-1983) |
| Katherine Green | .... | story editor / executive story editor (22 episodes, 1982-1983) |
| Sue Herring | .... | assistant: Mr. Daniels (22 episodes, 1982-1983) |
| Patricia S. Marino | .... | assistant: Mr. Daniels / assistant: Cary Matsumura (22 episodes, 1982-1983) |
| Tommy Goetz | .... | consultant (21 episodes, 1980-1981) |
| Jay Kleckner | .... | assistant: Mr. Daniels (21 episodes, 1980-1981) |
| Richard Sakai | .... | assistant: Mr. Cherry / assistant: Mr. Daniels (20 episodes, 1978-1979) |
| Catherine Tessier | .... | assistant: Mr. Daniels (20 episodes, 1978-1979) |
| Greg Nierman | .... | assistant: Mr. Daniels (20 episodes, 1980-1981) |
| Nat Bernstein | .... | assistant: Mr. Daniels (20 episodes, 1981-1982) |
| Glen Charles | .... | executive consultant (20 episodes, 1981-1982) |
| Les Charles | .... | executive consultant (20 episodes, 1981-1982) |
| Leslie Maier | .... | assistant: Mr. Daniels (20 episodes, 1981-1982) |
| Lynne Nessel | .... | assistant: Mr. Daniels (20 episodes, 1981-1982) |
| Sam Simon | .... | executive story editor (20 episodes, 1981-1982) |
| Matthew Carlson | .... | assistant: Mr. Daniels / assistant: Mr Daniels (19 episodes, 1979-1980) |
| Andrea Davis | .... | assistant: Mr. Daniels (17 episodes, 1978-1979) |
| Larry Foster | .... | assistant: Mr. Cherry / assistant: Mr. Daniels (17 episodes, 1978-1979) |
| Lea Goldbaum | .... | assistant: Mr. Daniels (17 episodes, 1978-1979) |
| Howard Gewirtz | .... | story editor (17 episodes, 1979-1980) |
| Charlotte Gray | .... | assistant: Mr. Daniels (17 episodes, 1982-1983) |
| Michael Griffith | .... | assistant: Mr. Daniels (16 episodes, 1982-1983) |
| Ian Praiser | .... | story editor (15 episodes, 1979-1980) |
| Shawn Goodman | .... | assistant: Mr. Daniels (15 episodes, 1982-1983) |
| James Wright | .... | production executive (15 episodes, 1982-1983) |
| Harvey Miller | .... | executive consultant (12 episodes, 1982-1983) |
| Robin James | .... | assistant: Mr. Daniels (7 episodes, 1980-1981) |
| Cary Matsumura | .... | assistant: Mr. Daniels (7 episodes, 1981) |
| Chris Painter | .... | assistant: Mr. Daniels (7 episodes, 1982) |
| Robin Green | .... | assistant: Mr. Daniels / executive assistant: Richard Sakai (6 episodes, 1982) |
| Tina Levine | .... | assistant: Mr. Daniels (6 episodes, 1982) |
|
| Edward Neumeier | .... | production assistant (unknown episodes) |
| |