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Richard Burton as Father Philip Lamont |
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Linda Blair as Regan MacNeil |
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Louise Fletcher as Dr. Gene Tuskin |
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Max von Sydow as Father Lankester Merrin |
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Kitty Winn as Sharon Spencer |
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Paul Henreid as The Cardinal |
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James Earl Jones as Older Kokumo |
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Ned Beatty as Edwards |
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Belinda Beatty as Liz |
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Rose Portillo as Spanish Girl |
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Barbara Cason as Mrs. Phalor |
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Tiffany Kinney as Deaf Girl |
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Joey Green as Young Kokumo |
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Fiseha Dimetros as Young Monk |
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Ken Renard as Abbot |
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Hank Garrett as Conductor |
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Lorry Goldman as Accident Victim |
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Bill Grant as Taxi Driver |
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Shane Butterworth as Gary Tuskin |
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Joely Adams as Linda Tuskin |
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Robert Lussier as |
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Charles Parks as |
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Richard Paul as Man on the Plane |
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George Skaff as |
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Marianne Muellerleile as Patient (uncredited) |
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Dana Plato as Sandra Phalor (uncredited) |
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Kelley Karel as Singer (uncredited) |
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Karen Knapp as Pazuzu (uncredited) |
| Production | John Boorman | Producer |
| Directing | John Boorman | Director |
| Sound | Ennio Morricone | Original Music Composer |
| Editing | Axel Hubert Sr. | Associate Editor |
| Costume & Make-Up | Gary Liddiard | Makeup Supervisor |
| Crew | Jim Blount | Special Effects |
| Crew | Jeff Jarvis | Special Effects |
| Costume & Make-Up | Bruce Walkup | Costume Supervisor |
| Costume & Make-Up | Wayne Edgar | Makeup Artist |
| Directing | Victor Hsu | Second Assistant Director |
| Art | Richard Lawrence | Assistant Art Director |
| Art | Dean Mitzner | Assistant Art Director |
| Writing | William Peter Blatty | Characters |
| Directing | William S. Beasley | Assistant Director Trainee |
| Art | Richard M. Rubin | Property Master |
| Sound | Jim Atkinson | Sound Effects Editor |
| Visual Effects | Albert Whitlock | Visual Effects |
| Directing | Bonnie Prendergast | Script Supervisor |
| Art | Jack T. Collis | Art Direction |
| Art | John P. Austin | Set Decoration |
| Costume & Make-Up | Dick Smith | Special Effects Makeup Artist |
| Directing | Phil Rawlins | Assistant Director |
| Sound | Ennio Morricone | Orchestrator |
| Sound | Ennio Morricone | Conductor |
| Editing | Ron Spang | Assistant Editor |
| Production | John R. Coonan | Unit Production Manager |
| Art | Peter R. Romero | Assistant Art Director |
| Crew | Ted Koerner | Special Effects |
| Crew | Bennie Moore | Stunts |
| Costume & Make-Up | Lynda Gurasich | Hair Supervisor |
| Directing | Rospo Pallenberg | Second Unit Director |
| Crew | John Ashby | Stunts |
| Costume & Make-Up | Ron Berkeley | Makeup Artist |
| Sound | Michael Minkler | Sound Re-Recording Mixer |
| Costume & Make-Up | Bill Milton | Costumer |
| Editing | John Merritt | Editor |
| Production | William C. Gerrity | Unit Production Manager |
| Sound | Les Fresholtz | Sound Re-Recording Mixer |
| Crew | Richard Ratliff | Special Effects |
| Visual Effects | Gerry Johnston | Special Effects Supervisor |
| Art | Gene Rudolf | Art Direction |
| Sound | Russ Hill | Sound Effects Editor |
| Crew | Chuck Gaspar | Special Effects |
| Art | Katrine Boorman | Draughtsman |
| Crew | Roy Kelly | Special Effects |
| Costume & Make-Up | Robert De Mora | Costume Design |
| Costume & Make-Up | Gae Clark Butler | Hairdresser |
| Sound | Arthur Piantadosi | Sound Re-Recording Mixer |
| Crew | Wayne Edgar | Special Effects |
| Crew | May Boss | Stunts |
| Costume & Make-Up | Betsy Cox | Costume Supervisor |
| Production | Charles Orme | Associate Producer |
| Sound | Eugene Marks | Music Editor |
| Costume & Make-Up | Carrie White | Additional Hairstylist |
| Costume & Make-Up | Terry Miles | Makeup Artist |
| Art | Harold Broner | Construction Coordinator |
| Sound | Walter Goss | Sound Mixer |
| Writing | William Goodhart | Writer |
| Editing | Tom Priestley | Editor |
| Camera | William A. Fraker | Director of Photography |
| Art | Richard Macdonald | Production Design |
| Production | Richard Lederer | Producer |
| Writing | Rospo Pallenberg | Writer |
| Crew | Whitey Hughes | Stunt Coordinator |
| Art | Dan Perri | Title Designer |
| Production | John James | Location Manager |
| Camera | Arthur Brooker | Key Grip |
| Lighting | Doug Pentek | Gaffer |
| Camera | Nick McLean | Camera Operator |
| Camera | Chris Schwiebert | Camera Operator |
| Camera | Garrett Brown | Steadicam Operator |
| Camera | Ronald L. Vargas Jr. | Assistant Camera |
| Crew | Michael Dryhurst | Thanks |
| Crew | Peter MacDonald | Thanks |
| Crew | Geoffrey Unsworth | Thanks |
