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