 | James Olson als Father Adamsky |
 | Burt Young als Anthony Montelli |
 | Rutanya Alda als Delores Montelli |
 | Jack Magner als Sonny Montelli |
 | Andrew Prine als Father Tom |
 | Diane Franklin als Patricia Montelli |
 | Moses Gunn als Turner |
 | Ted Ross als Mr. Booth |
| Erika Katz als Jan Montelli |
| Brent Katz als Mark Montelli |
 | Leonardo Cimino als Chancellor |
 | Danny Aiello III als Removal Man 1 |
| Gilbert Stafford als Removal Man 2 |
| Petra Leah als Mrs. Greer (as Petra Lea) |
 | Alan Dellay als Judge (as Allan Dellay) |
| Martin Donegan als Detective Cortez |
| John Ring als Police Chief |
| Peter Radon als Assistant Chancellor |
| Lawrence Bolen als Funeral Director |
| Tony Boschetti als Elderly Man in Church |
| John Clohessy als Police Officer 1 (as John Clohessey) |
| Hollis Granville als Police Officer 2 |
 | Frank Patton III als Police Officer 3 (as Frank Patton) |
| Kim H. Ornitz als Police Officer 4 (as Kim Ornitz) |
| Lindsay Hill als Police Officer 5 |
| Rudy Jones als Gardener |
| Todd Jamie als Guest at Birthday Party |
| Ken Smith als Prison Doctor |
 | Anita Keal als Demons' Voice (voice) |
| Sondra Lee als Demons' Voice (voice) |
 | Alice Playten als Demons' Voice (voice) |
| Hans Holzer | Book |
| Tommy Lee Wallace | Screenplay |
| Damiano Damiani | Director |
| Stephen R. Greenwald | Producer |
| Sam O'Steen | Editor |
| Bernard Williams | Executive Producer |
| Pier Luigi Basile | Production Design |
| Bill Kellard | Costume Design |
| George DeTitta Jr. | Set Decoration |
| Joe Cuervo | Makeup Artist |
| Lalo Schifrin | Original Music Composer |
| José López Rodero | Associate Producer |
| Ray Recht | Art Direction |
| Franco Di Giacomo | Director of Photography |
| Werner Sherer | Hairstylist |
| Ira N. Smith | Producer |
| Victor Magnotta | Stunt Coordinator |
| Hal Levinsohn | Sound Editor |
| John Caglione Jr. | Special Effects Makeup Artist |
| John Mazzoni | Dolly Grip |
| Dan Lieberstein | Sound Editor |
| Dennis Gamiello | Key Grip |
| Wendy G. Glickstein | Production Coordinator |
| Sheila Paige | Script Supervisor |
| G. Mac Brown | Production Manager |
| Gilbert Marouani | Music Consultant |
| Jeffrey Silver | Location Manager |
| Neil Fallon | Sound Recordist |
| Lori Blounstein | Assistant Editor |
| Norman Hollyn | Music Editor |
| Robert Hein | Sound Editor |
| Michael F. Burke | Gaffer |
| Wally Adee | Property Master |
| Kim H. Ornitz | Sound Mixer |
| Daniele Nannuzzi | Camera Operator |
| Thomas A. Gulino | Sound Editor |
| Richard Adee | Property Master |
| Kevin Meehan | Boom Operator |
| Sherri Taffel Brown | Production Coordinator |
| Dick Vorisek | Sound Re-Recording Mixer |
| Dino De Laurentiis | Executive Producer |
| Dardano Sacchetti | Writer |
| Ed French | Makeup & Hair Assistant |
| Dino De Laurentiis | Producer |
| Glen Robinson | Special Effects Supervisor |
