 | Oliver Reed als Dr. Hal Raglan |
 | Samantha Eggar als Nola Carveth |
 | Art Hindle als Frank Carveth |
 | Henry Beckman als Barton Kelly |
 | Nuala Fitzgerald als Juliana Kelly |
 | Cindy Hinds als Candice Carveth |
 | Susan Hogan als Ruth Mayer |
 | Gary McKeehan als Mike Trellan |
 | Michael Magee als Inspector |
 | Robert A. Silverman als Jan Hartog |
| Joseph Shaw als Coroner |
| Larry Solway als Lawyer |
 | Reiner Schwarz als Dr. Birkin |
 | Felix Silla als Creature |
| John Ferguson als Creature |
 | Nicholas Campbell als Chris |
| Mary Swinton als Wendy |
| Jerry Kostur als Construction Worker |
 | Chris Britton als Man in Auditorium |
| Elijah Siegler als Samson (uncredited) |
| David Cronenberg | Director |
| David Cronenberg | Writer |
| Claude Héroux | Producer |
| Pierre David | Executive Producer |
| Victor Solnicki | Executive Producer |
| Howard Shore | Original Music Composer |
| Mark Irwin | Director of Photography |
| Alan Collins | Editor |
| Carol Spier | Art Direction |
| Shonagh Jabour | Makeup Artist |
| James D. Brown | Hairstylist |
| Gwen Iveson | Production Manager |
| Allan Cotter | Special Effects |
| John Board | First Assistant Director |
| Libby Bowden | Second Assistant Director |
| Bill Harman | Construction Manager |
| Peter Lauterman | Property Master |
| Angelo Stea | Set Dresser |
| Peter Burgess | Sound Editor |
| Bryan Day | Sound Recordist |
| Joe Grimaldi | Sound Re-Recording Mixer |
| Brian Holland | Dialogue Editor |
| Jeremy MacLaverty | Assistant Sound Editor |
| Tom Mather | Boom Operator |
| Lois Tupper | Assistant Dialogue Editor |
| Don White | ADR Recordist |
| Jock Brandis | Gaffer |
| Maris H. Jansons | Key Grip |
| Robin Miller | First Assistant Camera |
| Rick Porter | Still Photographer |
| Gregory Villeneuve | Second Assistant Camera |
| Hilary Holden | Casting |
| Delphine White | Wardrobe Master |
| John Board | Post Production Coordinator |
| Carolyn Cronenberg | Assistant Editor |
| David Coatsworth | Location Manager |
| Nancy Eagles | Continuity |
| Wayne Arron | Production Accountant |
| Trudy Work | Production Secretary |
| Inge Klaudi | Assistant Makeup Artist |
| Dennis Pike | Special Effects Makeup Artist |
| Jack H. Young | Special Effects Makeup Artist |
| Michael Fruet | Assistant Set Dresser |
| Tom Reid | Assistant Property Master |
| Andy Malcolm | Foley Artist |
| Carlo Campana | Grip |
| Bob Gallant | Best Boy Grip |
| Granada Venné | Wardrobe Assistant |
| Maureen Fitzgerald | Production Assistant |
| Bob Murphy | Production Assistant |
| Vivian Palin | Craft Service |
| Nick Schefter | Production Assistant |
| Jay Telfer | Craft Service |
| Robert Wertheimer | Production Assistant |
