Robert Redford
Role: Joseph Turner
Faye Dunaway
Role: Kathy Hale
Cliff Robertson
Role: J. Higgins
Max von Sydow
Role: G. Joubert
John Houseman
Role: Mr. Wabash
Addison Powell
Role: Leonard Atwood
Walter McGinn
Role: Sam Barber
Tina Chen
Role: Janice Chon
John Randolph Jones
Role: Beefy Man
Michael Kane
Role: S.W. Wicks
Don McHenry
Role: Dr. Ferdinand Lappe
Jess Osuna
Role: The Major
Dino Narizzano
Role: Harold
Helen Stenborg
Role: Mrs. Edwina Russell (as Helen Stenbure)
Patrick Gorman
Role: Martin
Hansford Rowe
Role: Jennings (as Hansford H. Rowe Jr.) (as Hansford Rolle)
Carlin Glynn
Role: Mae Barber (as Carlin Gylnn)
Hank Garrett
Role: Mailman
Michael Miller
Role: Fowler
Arthur French
Role: Messenger
Jay Devlin
Role: Tall Thin Man
Robert Phalen
Role: Newberry
Garrison Phillips
Role: Hutton
Lee Steele
Role: Heidegger
Ed Crowley
Role: Ordinance Man
John Connell
Role: TV Reporter
Norman Bush
Role: Alice Lieutenant
James Keane
Role: Store Clerk
Ed Setrakian
Role: Customer
Myron Natwick
Role: Civilian
Michael Prince
Role: Civilian
Carol Gustafson
Role: Landlady
Sal Schillizzi
Role: Locksmith
Harmon William
Role: CIA Agent
David Bowman
Role: Telephone Worker
Eileen Gordon
Role: CIA Receptionist
Robert Dahdah
Role: Santa Claus
Ernest Harden Jr.
Role: Teenager
Beverly Goodman
Role: Girl (uncredited)
Russell Johnson
Role: Intelligence Officer at Briefing (uncredited)
Bruce Moreno
Role: Computer Operator (uncredited)
Lauren Simon
Role: Neighbor in Elevator (uncredited)