cast
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Ellen Burstyn
Chris MacNeil
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Linda Blair
Regan MacNeil
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Jason Miller
Father Damien Karras
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Max von Sydow
Father Lankester Merrin
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Lee J. Cobb
Lt. Bill Kinderman
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William O'Malley
Father Joseph Kevin Dyer
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Kitty Winn
Sharon Spencer
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Barton Heyman
Dr. Klein
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Peter Masterson
Dr. Barringer
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Jack MacGowran
Burke Dennings
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Rudolf Schündler
Karl
- Gina Petrushka Willi
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Robert Symonds
Dr. Taney
- Arthur Storch Psychiatrist
- Thomas Bermingham Tom
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Vasiliki Maliaros
Mary Karras
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Titos Vandis
Uncle John
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John Mahon
Language Lab Director
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Wallace Rooney
Bishop Michael
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Ron Faber
Chuck / Demon (voice)
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Donna Mitchell
Mary Jo Perrin
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Roy Cooper
Jesuit Dean
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Robert Gerringer
Senator at Party
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Mercedes McCambridge
Demon (voice)
- Paul Bateson Radiologist's Assistant (uncredited)
- Elinore Blair Nurse (uncredited)
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William Peter Blatty
The Producer (uncredited)
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Mary Boylan
First Mental Patient (uncredited)
- Dick Callinan Astronaut (uncredited)
- Mason Curry Doctor (voice) (uncredited)
- Toni Darnay Violent psychotic patient (uncredited)
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Eileen Dietz
Demon / Regan Double (uncredited)
- Joanne Dusseau Senator's Wife (uncredited)
- Bernard Eismann Minor Role (uncredited)
- Beatrice Hunter Minor Role (uncredited)
- Yvonne Jones Bellevue Nurse (uncredited)
- Don LaBonte Minor Role (uncredited)
- Barton Lane Angiography Doctor (uncredited)
- Ann Miles Spiderwalk (uncredited)
- John Nicola Priest (uncredited)
- Vincent Russell Subway Vagrant (uncredited)
- Gerard F. Yates Priest Singing Around Piano at Party (uncredited)
-
Rita Sakellariou
(her voice on the radio)