 | Talia Shire als Maggie Verne |
 | Robert Foxworth als Dr. Robert Verne |
 | Armand Assante als John Hawks |
 | Richard Dysart als Trevor Isley |
 | Victoria Racimo als Ramona Hawks |
 | George Clutesi als M'Rai |
| Tom McFadden als Pilot |
| Burke Byrnes als Father |
| Mia Bendixsen als Girl |
| Johnny Timko als Boy |
| Everett Creach als Kelso |
| Lyvingston Holmes als Black Woman |
 | Kevin Peter Hall als Mutant Bear |
 | Evans Evans als Cellist |
 | Charles H. Gray als Sheriff |
 | Graham Jarvis als Shusette |
 | Jim Burk als Rescuer |
| Bob Terhune als Rescuer |
| Lon Katzman als Rescuer |
| Steve Shemayne als Indian |
| Jaye Durkus als Sheriff's Deputy |
| Eric Mansker als Tenement Man |
| Cheri Bergen als Social Worker |
| Clifford Hutchison als Stage Manager |
| John Frankenheimer | Director |
| Harry Stradling Jr. | Director of Photography |
| Leonard Rosenman | Original Music Composer |
| Robert L. Rosen | Producer |
| David Seltzer | Writer |
| Ron Snyder | Makeup Artist |
| Tom Rolf | Editor |
| William Craig Smith | Production Design |
| Ray Summers | Costume Design |
| Gilbert B. Combs | Stunts |
| Buddy Joe Hooker | Stunts |
| Janet Brady | Stunts |
| Sandra Lee Gimpel | Stunts |
| Billy Hank Hooker | Stunts |
| Everett Creach | Stunts |
| Jerry Gatlin | Stunts |
| Patty Elder | Stunts |
| Jerry Maren | Stunts |
| Cliff McLaughlin | Stunts |
| Tommy Madden | Stunts |
| Don Fox Greene | Stunts |
| Ruth A. Redfern | Stunts |
| Gene McLaughlin | Stunts |
| John Roselius | Stunts |
| Sandy Robertson | Stunts |
| Denny Arnold | Stunts |
| Alex Green | Stunts |
| Michael Adams | Stunts |
| Pamela Bebermeyer | Stunts |
| Ron Burke | Stunts |
| Gary Combs | Stunts |
| Lynn Stalmaster | Casting |
| George Gaines | Set Decoration |
| Ellis Burman Jr. | Special Effects Makeup Artist |
| Thomas R. Burman | Special Effects Makeup Artist |
| Edouard F. Henriques | Makeup Effects |
| Ann Wadlington | Hairstylist |
| Allan A. Apone | Special Effects Makeup Artist |
| Alan Levine | Unit Production Manager |
| Lindsley Parsons Jr. | Production Manager |
| Robert P. Cohen | Second Assistant Director |
| L. Andrew Stone | Assistant Director |
| Paul L. Tucker | Second Assistant Director |
| Sherman Labby | Production Illustrator |
| Ray Mercer Jr. | Property Master |
| Gene Lauritzen | Construction Coordinator |
| Arthur Shippee | Assistant Property Master |
| Gene S. Cantamessa | Sound Mixer |
| Cecelia Hall | Sound Effects Editor |
| William R. Kowalchuk Jr. | Sound Effects Editor |
| John Wilkinson | Sound Re-Recording Mixer |
| Raul A. Bruce | Boom Operator |
| Ellis Burman Jr. | Prop Maker |
| Bob Dawson | Special Effects |
| Edouard F. Henriques | Prop Maker |
| James Kagel | Sculptor |
| Jor Van Kline | Special Effects |
| Clifford Hutchison | Gaffer |
| Tom D. May | Key Grip |
| Richard Craig Meinardus | First Assistant Camera |
| Norman Lang | Electrician |
| Ken Nishino | Assistant Camera |
| George Trirogoff | Assistant Editor |
| Michael Ripps | Assistant Editor |
| Jim Henrikson | Music Editor |
| Dale Anderson | Musician |
| Israel Baker | Musician |
| Arnold Belnick | Musician |
| Harry Bluestone | Musician |
| Norman Carr | Musician |
| Ronald Cooper | Musician |
| Isabelle Daskoff | Musician |
| John Franco | Script Supervisor |
| Peter Borkent | Stunt Driver |
