Clint Eastwood
Patrick McGoohan
Roberts Blossom
Jack Thibeau
Fred Ward
Paul Benjamin
Larry Hankin
Bruce M. Fischer
Frank Ronzio
Fred Stuthman

Clint Eastwood as Frank Morris
Patrick McGoohan as Warden
Roberts Blossom as Doc
Jack Thibeau as Clarence Anglin
Fred Ward as John Anglin
Paul Benjamin as English
Larry Hankin as Charley Butts
Bruce M. Fischer as Wolf
Frank Ronzio as Litmus
Fred Stuthman as Johnson
David Cryer as Wagner
Madison Arnold as Zimmerman
Blair Burrows as Fight Guard
Bob Balhatchet as Medical Technical Assistant
Matthew Locricchio as Exam Guard (as Matthew J. Locricchio)