David Warner
as Keith Jennings
Billie Whitelaw
as Mrs. Baylock
Gregory Peck
as Robert Thorn
Patrick Troughton
as Father Brennan
Martin Benson
as Father Spiletto
Lee Remick
as Kathy Thorn
Harvey Stephens
as Damien
Anthony Nicholls
as Dr. Becker
Holly Palance
as Nanny
John Stride
as The Psychiatrist
Robert MacLeod
as Horton
Sheila Raynor
as Mrs. Horton
Tommy Duggan
as Priest
Robert Rietty
as Monk