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