Steve McQueen ... Henri 'Papillon' Charriere
Dustin Hoffman ... Louis Dega
Victor Jory ... Indian Chief
Don Gordon ... Julot
Anthony Zerbe ... Toussaint
Robert Deman ... Maturette
Woodrow Parfrey ... Clusiot
Bill Mumy ... Lariot
George Coulouris ... Dr. Chatal
Ratna Assan ... Zoraima
William Smithers ... Warden Barrot
Val Avery ... Pascal
Gregory Sierra ... Antonio
Vic Tayback ... Sergeant (as Victor Tayback)
Mills Watson ... Guard
Ron Soble ... Santini
Barbara Morrison ... Mother Superior
Don Hanmer ... Butterfly Trader
E.J. Andre ... Old Con
Richard Angarola ... Commandant
Jack Denbo ... Classification Officer
Len Lesser ... Guard
John Quade ... Masked Breton
Fred Sadoff ... Deputy Warden
Allen Jaffe ... Turnkey
Liam Dunn ... Old Trustee
Peter Brocco ... Doctor (uncredited)
Richard Farnsworth ... Manhunter (uncredited)
Billy M. Greene ... Old Man (uncredited)
Anne Byrne Hoffman ... Mrs. Dega (uncredited)
Fred Lerner ... Convict on Ship (uncredited)
Harry Monty ... (uncredited)
Ellen Moss ... Nun (uncredited)
Ken Muggleston ... Border Official (uncredited)
Dalton Trumbo ... Commandant (uncredited)