| Person | Type | Job | Role(s) |
|---|---|---|---|
 Barry De Vorzon | Crew | Sound | Original Music Composer |
 Bill Forsche | Crew | Costume & Make-Up | Special Effects Makeup Artist |
Bill Varney | Crew | Sound | Sound Re-Recording Mixer |
Bob Minkler | Crew | Sound | Sound Re-Recording Mixer |
Carter DeHaven | Crew | Production | Producer |
 Chuck Waters | Crew | Crew | Stunt Double |
Cydney Cornell | Crew | Costume & Make-Up | Hair Supervisor |
Dana Lyman | Crew | Costume & Make-Up | Costume Design |
Daniel W. Barringer | Crew | Crew | Stunts |
 Dean Raphael Ferrandini | Crew | Crew | Stunts |
Del Acevedo | Crew | Costume & Make-Up | Makeup Artist |
Donlee Jorgensen | Crew | Sound | Sound Editor |
Erin Koplow | Crew | Costume & Make-Up | Makeup Artist |
 Gary Baxley | Crew | Crew | Stunts |
 George P. Wilbur | Crew | Crew | Stunts |
 Gerry Fisher | Crew | Camera | Director of Photography |
Greg Cannom | Crew | Costume & Make-Up | Special Effects Makeup Artist |
Hugh Scaife | Crew | Art | Set Decoration |
 James G. Robinson | Crew | Production | Executive Producer |
Jeff Burks | Crew | Visual Effects | Animation Supervisor |
Joanne D'Antonio | Crew | Sound | Sound Editor |
 Joe Roth | Crew | Production | Executive Producer |
Jon R. Tower | Crew | Lighting | Gaffer |
 Kurt D. Lott | Crew | Crew | Stunts |
Lane Leavitt | Crew | Crew | Stunts |
Leslie Dilley | Crew | Art | Production Design |
Mat Beck | Crew | Visual Effects | Visual Effects Supervisor |
Mike Chock | Crew | Sound | Sound Editor |
Mike Smithson | Crew | Costume & Make-Up | Prosthetic Supervisor |
Patricia Grande | Crew | Costume & Make-Up | Hairstylist |
 Paul Baxley | Crew | Directing | Second Unit Director |
Paul Huntley | Crew | Costume & Make-Up | Wigmaker |
Paul Stanhope Jr. | Crew | Costume & Make-Up | Makeup Supervisor |
Peter Lee-Thompson | Crew | Editing | Editor |
 Richard L. Anderson | Crew | Sound | Supervising Sound Editor |
Richard W. Abramitis | Crew | Directing | First Assistant Director |
Robert C. Goldstein | Crew | Art | Art Direction |
Robert Stadd | Crew | Visual Effects | Visual Effects Producer |
Steve Jaffe | Crew | Production | Associate Producer |
Steve Maslow | Crew | Sound | Sound Re-Recording Mixer |
Thom Noble | Crew | Editing | Editor |
 Todd C. Ramsay | Crew | Editing | Editor |
 Tom Morga | Crew | Crew | Stunts |
Warren Hamilton Jr. | Crew | Sound | Sound Editor |
 William Peter Blatty | Crew | Writing | Screenplay, Director, Novel |
William Purcell | Crew | Crew | Special Effects Coordinator |
Richard Van Dyke | Crew | Sound | Sound Mixer |
James Christopher | Crew | Sound | Sound Editor |
 Sharon Benson | Crew | Crew | Special Effects Coordinator |
Burness Dembrowski | Crew | Sound | Sound Editor |
Jim Stephan | Crew | Crew | Stunts |
Sharon Gerhard | Crew | Directing | Second Assistant Director |
Henry Shaffer | Crew | Art | Art Direction |
Abe Milrad | Crew | Visual Effects | Visual Effects Supervisor |
Jeffrey Hayes | Crew | Sound | Sound |
Jay C. Currin | Crew | Crew | Stunts |
 Alex Zuckerman | Cast | Actor | Korner Boy |
 Amelia Campbell | Cast | Actress | Young Girl in Dream (uncredited) |
 Barbara Baxley | Cast | Actress | Shirley |
Bobby Deren | Cast | Nurse Bierce | |
 Brad Dourif | Cast | Actor | James Venamun / The Gemini Killer |
Brad Waller | Cast | Actor | Asylum Inmate (uncredited) |
C. Everett Koop | Cast | Actor | Everett Koop |
 Charles Edwin Powell | Cast | Actor | Patient X Possessed |
Cherie Baron | Cast | Nurse | |
Chuck Kinlaw | Cast | Attendant | |
 Clifford David | Cast | Actor | Dr. Bruno |
 Colleen Dewhurst | Cast | Actress | Satan (voice) (uncredited) |
 Danny Epper | Cast | Actor | Police Driver |
 David Dwyer | Cast | Actor | Second Police Officer |
Debra Port | Cast | Waitress | |
Demetrios Pappageorge | Cast | Casperelii | |
 Don Gordon | Cast | Actor | Ryan |
 Ed Flanders | Cast | Actor | Father Joseph Kevin Dyer |
Edward Lynch | Cast | Patient A | |
 Fabio | Cast | Actor | Angel (uncredited) |
 George C. Scott | Cast | Actor | Lt. William 'Bill' Kinderman |
 George DiCenzo | Cast | Actor | Stedman |
 Grand L. Bush | Cast | Actor | Sergeant Atkins |
 Harry Carey, Jr. | Cast | Actor | Father Kanavan |
James Burgess | Cast | Actor | Thomas Kintry |
Jan Neuberger | Cast | Actress | Alice |
Jan Smook | Cast | Radio Man (uncredited) | |
 Jason Miller | Cast | Actor | Father Damien Karras / Patient X |
 Jodi Long | Cast | Actress | First Dream Woman (uncredited) |
John Coe | Cast | Old Man in Dream (uncredited) | |
Kathy Gerber | Cast | Second Dream Woman (uncredited) | |
 Ken Lerner | Cast | Actor | Dr. Freedman |
 Kevin Corrigan | Cast | Actor | Altar Boy |
 Larry King | Cast | Actor | Larry King |
 Lee Richardson | Cast | Actor | University President |
 Lois Foraker | Cast | Nurse Merrin | |
Manley Pope | Cast | Angel (uncredited) | |
 Mary Jackson | Cast | Actress | Mrs. Clelia |
 Nancy Fish | Cast | Actress | Nurse Allerton |
 Nicol Williamson | Cast | Actor | Father Morning |
Nina Hansen | Cast | Actress | Little Old Lady |
 Patrick Ewing | Cast | Actor | Angel of Death |
 Patt Noday | Cast | Actor | Hospital Ward Priest (uncredited) (unconfirmed) |
Peggy Alston | Cast | Actress | Mrs. Kintry |
Ryan Paul Amick | Cast | Second Dream Boy (uncredited) | |
 Samuel L. Jackson | Cast | Actor | Dream Blind Man |
 Scott Wilson | Cast | Actor | Dr. Temple |
Shane Wexel | Cast | First Dream Boy (uncredited) | |
Sherrie Wills | Cast | Julie Kinderman | |
 Teresa Wright | Cast | Actress | Penitent (uncredited) |
 Tracy Thorne | Cast | Actress | Nurse Keating |
 Tyra Ferrell | Cast | Actress | Nurse Blaine |
 Viveca Lindfors | Cast | Actress | Nurse X |
 Walt MacPherson | Cast | Actor | Police Sergeant |
William Preston | Cast | Actor | Old Man in Wheelchair |
 Zohra Lampert | Cast | Actress | Mary Kinderman |
Alexis Chieffet | Cast | Counter Attendant | |
John Durkin | Cast | Elderly Jesuit | |
 Clinton Brandhagen | Cast | Actor | Young Boy in Dream (uncredited) |
Michael Criscuolo | Cast | Mental Patient (uncredited) | |
Gary Wheeler | Cast | Crime Photographer (uncredited) | |
Michael Tove | Cast | Man in Purgatory (uncredited) | |
John Thompson | Cast | John Thompson - Georgetown Hoyas Basketball Coach (uncredited) | |
Randy Aaron Fink | Cast | Student (uncredited) | |
Cindy Cullom | Cast | Nurse (uncredited) | |
Jeff Henry | Cast | Actor | Angel (uncredited) |
| Person | Type | Job | Role(s) |
