Robert Redford as Joseph Turner

Faye Dunaway as Kathy Hale

Cliff Robertson as J. Higgins

Max von Sydow as G. Joubert

John Houseman as Mr. Wabash

Addison Powell as Leonard Atwood

Walter McGinn as Sam Barber

Tina Chen as Janice Chon

John Randolph Jones as Beefy Man

Michael Kane as S.W. Wicks

Don McHenry as Dr. Ferdinand Lappe

Jess Osuna as The Major

Dino Narizzano as Harold

Helen Stenborg as Mrs. Edwina Russell (as Helen Stenbure)

Patrick Gorman as Martin

Hansford Rowe as Jennings (as Hansford H. Rowe Jr.) (as Hansford Rolle)

Carlin Glynn as Mae Barber (as Carlin Gylnn)

Hank Garrett as Mailman

Michael Miller as Fowler

Arthur French as Messenger

Jay Devlin as Tall Thin Man

Frank Savino as Jimmy

Robert Phalen as Newberry

Garrison Phillips as Hutton

Lee Steele as Heidegger

Ed Crowley as Ordinance Man

John Connell as TV Reporter

Norman Bush as Alice Lieutenant

James Keane as Store Clerk

Ed Setrakian as Customer

Myron Natwick as Civilian

Michael Prince as Civilian

Carol Gustafson as Landlady

Sal Schillizzi as Locksmith

Harmon William as CIA Agent

David Bowman as Telephone Worker

Eileen Gordon as CIA Receptionist

Robert Dahdah as Santa Claus

Steve Bonino as Kid

Jennifer Rose as Kid

David Allen as Kid

Glenn Ferguson as Kid

Paul Dwyer as Kid

Marian Swan as Nurse

Dorothi Fox as Nurse

Ernest Harden Jr. as Teenager

Beverly Goodman as Girl (uncredited)

Russell Johnson as Intelligence Officer at Briefing (uncredited)

Bruce Moreno as Computer Operator (uncredited)

Lauren Simon as Neighbor in Elevator (uncredited)