Michael York
D'Artagnan
Oliver Reed
Athos
Richard Chamberlain
Aramis
Frank Finlay
Porthos
Faye Dunaway
Milady de Winter
Christopher Lee
Rochefort
Raquel Welch
Constance de Bonancieux
Geraldine Chaplin
Queen Anne of Austria
Charlton Heston
Cardinal Richelieu
Roy Kinnear
Planchet
Simon Ward
Duke of Buckingham
Jean-Pierre Cassel
Louis XIII
Michael Gothard
Felton
Nicole Calfan
Maid Kitty
Ángel del Pozo
Jussac
Eduardo Fajardo
Officer
Sybil Danning
Eugenie
Gitty Djamal
Beatrice
Jack Watson
Busigny
Richard Adams
Tortured Thug
Bob Todd
Firing Squad Officer
Tom Buchanan
Firing Squad Sergeant
Norman Chappell
Submarine Inventor
Leon Greene
Swiss Officer
Lucy Tiller
Mother Superior
Tyrone Cassidy
English Officer
Oliver MacGreevy
Headsman (uncredited)
Joss Ackland
D'Artagnan's Father (archive footage) (uncredited)
Gretchen Franklin
D'Artagnan's Mother (archive footage) (uncredited)
Richard Briers
Louis XIII (voice) (uncredited)
John Bluthal
English Officer/Innkeeper and other roles (voice) (uncredited)