Gregory Peck
Robert Thorn
Gregory Peck
Robert Thorn
Lee Remick
Katherine Thorn
David Warner
Keith Jennings
Billie Whitelaw
Mrs. Baylock
Harvey Stephens
Damien
Patrick Troughton
Father Brennan
Martin Benson
Father Spiletto
Robert Rietti
Monk
Tommy Duggan
Priest
John Stride
Psychiatrist
Holly Palance
Young Nanny
Anthony Nicholls
Dr. Becker
Roy Boyd
Reporter
Sheila Raynor
Mrs. Horton
Robert MacLeod
Horton
Bruce Boa
Thorn's Aide
Don Fellows
Thorn's Second Aide
Patrick McAlinney
Photographer
Dawn Perllman
Chambermaid
Nancy Mannigham
Nurse
Miki Iveria
First Nun
Betty McDowall
American Secretary
Nicholas Campbell
Marine
Burnell Tucker
Secret Service Man (uncredited)
Ronald Leigh-Hunt
Gentleman at Rugby Match (uncredited)
Guglielmo Spoletini
Italian Taxi Driver (uncredited)
Freda Dowie
Nun (uncredited)
Ya'ackov Banai
Arab (uncredited)
Harvey Bernhard
Man walking across street (uncredited)
Michael Byrne
Monk (uncredited)
Leo McKern
Carl Bugenhagen (uncredited)
Bill Reimbold
General (uncredited)
Michael Leader
Rugby Match Spectator (uncredited)
Stuart Baird
Editor
Harvey Bernhard
Producer
Charles Orme
Producer
Mace Neufeld
Executive Producer
Jerry Goldsmith
Original Music Composer
Richard Donner
Director
David Seltzer
Screenplay
Stuart Freeborn
Makeup Artist
Maude Spector
Casting
Claude Hudson
Production Manager
Gilbert Taylor
Director of Photography
Carmen Dillon
Art Direction
George Ball
Property Master
John Chisholm
Property Master
David Tomblin
Assistant Director
Tessa Davies
Set Dressing Artist
Gerry Anstiss
Camera Operator
George Gibbs
Special Effects
Tiny Nicholls
Costume Supervisor
Arthur Morton
Orchestrator
John Richardson
Special Effects
Peter Bloor
Electrician
George Richardson
Assistant Art Director
Alf Joint
Stunt Coordinator
Chris Ridsdale
Assistant Editor
Lionel Newman
Additional Soundtrack
Steve Lanning
Assistant Director
Vic Armstrong
Stunts
Bernard Hanson
Location Manager
Elaine Schreyeck
Other
Bob Penn
Still Photographer
Pat McDermott
Hairstylist