Linda Blair character Regan MacNeil
Richard Burton character Father Philip Lamont
Louise Fletcher character Dr. Gene Tuskin
Max von Sydow character Father Lancaster Merrin
Kitty Winn character Sharon Spencer
Paul Henreid character The Cardinal
James Earl Jones character Older Kokumo
Ned Beatty character Edwards
Belinda Beatty character Liz
Rose Portillo character Spanish Girl
Barbara Cason character Mrs. Phalor
Tiffany Kinney character Deaf Girl
Joey Green character Young Kokumo
Fiseha Dimetros character Young Monk
Ken Renard character Abbot
Hank Garrett character Conductor
Lorry Goldman character Accident Victim
Bill Grant character Taxi Driver
Shane Butterworth character Gary Tuskin
Joely Adams character Linda Tuskin
Richard Paul character Man on the Plane
Marianne Muellerleile character Patient (uncredited)
Dana Plato character Sandra Phalor (uncredited)
Kelley Karel character Singer (uncredited)
Karen Knapp character Pazuzu (uncredited)
