John Boorman Director, Producer Linda Blair Regan MacNeil Actor Richard Burton Father Philip Lamont Actor Louise Fletcher Dr. Gene Tuskin Actor Max von Sydow Father Merrin Actor Kitty Winn Sharon Spencer Actor Paul Henreid The Cardinal Actor James Earl Jones Older Kokumo Actor Ned Beatty Edwards Actor Belinda Beatty Liz Actor Rose Portillo Spanish Girl Actor Barbara Cason Mrs. Phalor Actor Tiffany Kinney Deaf Girl Actor Joey Green Young Kokumo Actor Ken Renard Abbot Actor Hank Garrett Conductor Actor William Goodhart Writer Richard Lederer Producer William A. Fraker Cinematographer Tom Priestley Film Editing Ennio Morricone Original Music Richard Macdonald Production Design Jack T. Collis Art Director John P. Austin Set Decoration Robert De Mora Costume Design