William Friedkin Director
Max von Sydow Father Lankester Merrin
Ellen Burstyn Chris MacNeil
Juliet Taylor Casting
Linda Blair Regan MacNeil
Donna Mitchell Mary Jo Perrin
Lee J. Cobb Lt. Bill Kinderman
Titos Vandis Uncle John
Mercedes McCambridge Demon (voice)
Robert Symonds Dr. Taney
Chris Newman Sound
Rick Baker Special Effects Assistant
William Peter Blatty Novel, Screenplay, Producer, The Producer (uncredited)
John Mahon Language Lab Director
Jack Nitzsche Original Music Composer
Dan Perri Title Designer
Jason Miller Father Damien Karras
Louis DiGiaimo Casting
Kitty Winn Sharon Spencer
Rudolf Schündler Karl
William A. Farley Hairstylist
Bud S. Smith Editor
Owen Roizman Director of Photography
Barton Heyman Dr. Klein
Mason Curry Doctor (voice) (uncredited)
Evan A. Lottman Editor
Roy Cooper Jesuit Dean
Eileen Dietz Demon / Regan Double (uncredited)
Josh Weiner Still Photographer
Jack MacGowran Burke Dennings
Mary Boylan First Mental Patient (uncredited)
David Wynn-Jones Focus Puller
William O'Malley Father Joseph Kevin Dyer
Peter Masterson Dr. Barringer
Dick Smith Makeup Artist
Wallace Rooney Bishop Michael
Noel Marshall Executive Producer
David Salven Associate Producer
Dick Callinan Astronaut (uncredited)
Gina Petrushka Willi
Nessa Hyams Casting
Elinore Blair Nurse (uncredited)
Charles Bailey Assistant Art Director
Nicholas Sgarro Script Supervisor
Edward Garzero Scenic Artist
Joanne Dusseau Senator's Wife (uncredited)
Arthur Storch Psychiatrist
Jerry Wunderlich Set Decoration
Eugene Marks Music Editor
Joseph M. Caracciolo Property Master
Thomas Bermingham Tom
Hal Landaker Sound
Fred J. Brown Sound Effects Editor
Vasiliki Maliaros Mary Karras
Paul Bateson Radiologist's Assistant (uncredited)
Ross Taylor Sound Effects Editor
Bernard Eismann Minor Role (uncredited)
Richard Quinlan Gaffer
Toni Darnay Violent psychotic patient (uncredited)
Robert Gerringer Senator at Party
Terence A. Donnelly First Assistant Director
Bill Malley Production Design
Ron Faber Chuck / Demon (voice)
Vincent Russell Subway Vagrant (uncredited)
Norman Gay Editor
Marcel Vercoutere Special Effects
Yvonne Jones Bellevue Nurse (uncredited)
Beatrice Hunter Minor Role (uncredited)
Rita Sakellariou (her voice on the radio)
Ann Miles Spiderwalk (uncredited), Stunts
John Nicola Priest (uncredited), Technical Advisor
Joe Fretwell Costume Design