
| John Ritter | ... | Jack Tripper / ... (174 episodes, 1976-1984) |

| Joyce DeWitt | ... | Janet Wood (173 episodes, 1976-1984) |
 | Richard Kline | ... | Larry Dallas (110 episodes, 1977-1984) |

| Don Knotts | ... | Ralph Furley (94 episodes, 1979-1984) |

| Suzanne Somers | ... | Chrissy Snow (89 episodes, 1977-1981) |

| Priscilla Barnes | ... | Terri Alden (72 episodes, 1981-1984) |
 | Audra Lindley | ... | Helen Roper (56 episodes, 1976-1981) |
 | Norman Fell | ... | Stanley Roper / ... (56 episodes, 1976-1981) |

| Jenilee Harrison | ... | Cindy Snow (30 episodes, 1980-1982) |
 | Ann Wedgeworth | ... | Lana Shields (13 episodes, 1979-1980) |
 | Jordan Charney | ... | Frank Angelino / ... (12 episodes, 1979-1983) |
 | Paul Ainsley | ... | Jim the Bartender (11 episodes, 1977-1980) |

| Brad Blaisdell | ... | Mike the Bartender (10 episodes, 1981-1983) |
 | William Pierson | ... | Dean Travers (6 episodes, 1977-1981) |

| Gino Conforti | ... | Felipe Gomez (6 episodes, 1981-1982) |
 | Anne Schedeen | ... | Linda / ... (5 episodes, 1978-1982) |
 | Mickey Deems | ... | Gimbel / ... (5 episodes, 1978-1982) |
 | Sheila Rogers | ... | Marge Andrews / ... (4 episodes, 1978-1984) |

| Jeffrey Tambor | ... | Dr. Phillip Greene / ... (4 episodes, 1979-1982) |
 | David Ruprecht | ... | Phillip Dawson (4 episodes, 1984) |

| Peter Mark Richman | ... | Reverend Snow (3 episodes, 1978-1979) |

| Sondra Currie | ... | Arlene Price / ... (3 episodes, 1977-1984) |

| Macon McCalman | ... | Roland Wood / ... (3 episodes, 1979-1983) |
 | Joe George | ... | Chauffeur / ... (3 episodes, 1980-1984) |
 | Taaffe O'Connell | ... | Barbara Howard / ... (3 episodes, 1979-1984) |
 | Barbara Stuart | ... | Martha / ... (3 episodes, 1980-1983) |

| Karen Austin | ... | Denise / ... (3 episodes, 1980-1982) |
 | Britt Leach | ... | Chuck / ... (3 episodes, 1981-1984) |
 | Mina Kolb | ... | Mrs. Alden (3 episodes, 1981-1983) |
 | Shell Kepler | ... | Didi / ... (3 episodes, 1981) |
 | Mary Cadorette | ... | Vicky Bradford (3 episodes, 1984) |
 | Robert Mandan | ... | James Bradford (3 episodes, 1984) |
 | Emmaline Henry | ... | J.C. Braddock (2 episodes, 1978-1979) |

| Joel Brooks | ... | Dr. Prescott (2 episodes, 1979-1980) |
 | J.J. Barry | ... | Compton / ... (2 episodes, 1977-1978) |
 | Daniel Trent | ... | Elliott / ... (2 episodes, 1979-1980) |
 | Jenifer Shaw | ... | Rita / ... (2 episodes, 1977-1982) |
 | Paul Barselou | ... | Man / ... (2 episodes, 1978-1983) |
 | Michael Bell | ... | Michael / ... (2 episodes, 1978-1981) |
 | Rod McCary | ... | Bill Martin / ... (2 episodes, 1979-1983) |

| Ruta Lee | ... | Marsha Whitewood / ... (2 episodes, 1979-1982) |

| Joanna Kerns | ... | Bobby Trilling / ... (2 episodes, 1980-1983) |

| Lois Hamilton | ... | Katy Williams / ... (2 episodes, 1978-1981) |
 | David Tress | ... | Desk Sergeant / ... (2 episodes, 1978-1980) |
 | Jenny Sherman | ... | Diane / ... (2 episodes, 1979-1983) |
 | Louise Williams | ... | Chloe Brown / ... (2 episodes, 1979-1982) |
 | Keene Curtis | ... | Andrew Gainer / ... (2 episodes, 1979-1981) |
 | Tori Lysdahl | ... | Rita / ... (2 episodes, 1980-1982) |
 | Alan Manson | ... | Mike the Cop / ... (2 episodes, 1980-1981) |
 | Irene Tedrow | ... | Martha / ... (2 episodes, 1979-1982) |
 | Ruth Manning | ... | Harriet Hadley / ... (2 episodes, 1979-1981) |
 | Stephen Johnson | ... | Phil Durkin / ... (2 episodes, 1980-1981) |
 | Paul Kent | ... | Alvin Morell / ... (2 episodes, 1979-1981) |
 | Melanie Vincz | ... | Sylvia (2 episodes, 1979-1982) |
 | Alan McRae | ... | Phil / ... (2 episodes, 1979-1981) |
 | Shera Danese | ... | Barmaid (2 episodes, 1976-1977) |
 | Lou Wills Jr. | ... | Cab Driver (2 episodes, 1976-1977) |
 | Christina Hart | ... | Francesca Angelino / ... (2 episodes, 1977-1981) |
 | Elaine Giftos | ... | Darlene / ... (2 episodes, 1980-1982) |
 | Rod Colbin | ... | Mr. Franklin / ... (2 episodes, 1981-1982) |
 | Terry Kiser | ... | Max / ... (2 episodes, 1981-1982) |
 | John McCook | ... | Alan / ... (2 episodes, 1981-1982) |
 | Jacque Lynn Colton | ... | Bernice / ... (2 episodes, 1982-1984) |
 | Glen Ash | ... | Hearty Man / ... (2 episodes, 1982-1983) |

| Pamela Dunlap | ... | Lily (2 episodes, 1982-1983) |

| Lucille Ball | ... | Herself (2 episodes, 1982) |
 | William Cort | ... | Dr. Porter / ... (2 episodes, 1983-1984) |
 | Fran Ryan | ... | Grace / ... (2 episodes, 1983-1984) |
 | Don Sparks | ... | Bob / ... (2 episodes, 1983-1984) |

| Robert Clotworthy | ... | Tony Williams (2 episodes, 1984) |
|
| Carol Summers | .... | assistant to producer / script supervisor / ... (50 episodes, 1976-1980) |
| George Burditt | .... | executive story consultant (50 episodes, 1976-1979) |
| Paul Wayne | .... | executive story consultant (50 episodes, 1976-1979) |
| Jim Rice | .... | stage manager (47 episodes, 1976-1980) |
| Bob Schulz | .... | technical director (43 episodes, 1976-1980) |
| Bea Dallas | .... | program coordinator / assistant to producers (27 episodes, 1977-1980) |
| Michael S. Baser | .... | executive script consultant (25 episodes, 1979-1980) |
| George Sunga | .... | production consultant (25 episodes, 1979-1980) |
| Mark Tuttle | .... | executive story editor (25 episodes, 1979-1980) |
| Kim Weiskopf | .... | executive script consultant (25 episodes, 1979-1980) |
| Al Gordon | .... | executive story editor (22 episodes, 1978-1984) |
| Jack Mendelsohn | .... | executive story editor (22 episodes, 1978-1979) |
| Bob Priest | .... | associate director (22 episodes, 1978-1979) |
| Dick Scovel | .... | video (19 episodes, 1978-1980) |
| Charles Stewart | .... | executive story editor (18 episodes, 1976-1978) |
| Nancy Stevenson | .... | video (13 episodes, 1978-1979) |
| Dale Orlich | .... | video (10 episodes, 1979-1980) |
| Alan J. Levitt | .... | executive story editor (8 episodes, 1977-1978) |
| Howard Albrecht | .... | story consultant (8 episodes, 1980) |
| Sol Weinstein | .... | story consultant (8 episodes, 1980) |
| Al Kawa | .... | video (3 episodes, 1978-1979) |
| Gene Lukowski | .... | technical director (2 episodes, 1977) |
| Clive Bassett | .... | technical director (2 episodes, 1978) |
| Dayne Campbell | .... | video (2 episodes, 1979) |
| Dick Woodka | .... | technical director (2 episodes, 1979) |
|
| Michael Ross | .... | script supervisor (unknown episodes, 1977-1978) |
| Bernard West | .... | script supervisor (unknown episodes, 1977-1978) |
| Martin Rips | .... | executive script supervisor / executive story editor (unknown episodes, 1980-1981) |
| Joseph Staretski | .... | executive script supervisor / executive story editor (unknown episodes, 1980-1981) |
| Ellen Guylas | .... | executive story editor / story editor (unknown episodes, 1981-1983) |
| Shelley Zellman | .... | executive story consultant / script consultant (unknown episodes, 1981-1983) |
| David Mirkin | .... | story editor (unknown episodes, 1982-1984) |
| Ron Bloomberg | .... | executive story consultant (unknown episodes, 1983-1984) |
| Chet Dowling | .... | executive story editor (unknown episodes, 1983-1984) |
| Sandy Krinski | .... | executive story editor (unknown episodes, 1983-1984) |
| John Boni | .... | executive story editor (unknown episodes) |
| Robert A. Bowen | .... | technical director (unknown episodes) |
| Charles Franklin | .... | technical director (unknown episodes) |
| |