Michael York as D'Artagnan

Oliver Reed as Athos

Richard Chamberlain as Aramis

Frank Finlay as Porthos

Faye Dunaway as Milady de Winter

Christopher Lee as Rochefort

Raquel Welch as Constance de Bonancieux

Geraldine Chaplin as Queen Anne of Austria

Charlton Heston as Cardinal Richelieu

Roy Kinnear as Planchet

Simon Ward as Duke of Buckingham

Jean-Pierre Cassel as Louis XIII

Michael Gothard as Felton

Nicole Calfan as Maid Kitty

Ángel del Pozo as Jussac

Eduardo Fajardo as Officer

Sybil Danning as Eugenie

Gitty Djamal as Beatrice

Jack Watson as Busigny

Richard Adams as Tortured Thug

Bob Todd as Firing Squad Officer

Tom Buchanan as Firing Squad Sergeant

Norman Chappell as Submarine Inventor

Leon Greene as Swiss Officer

Lucy Tiller as Mother Superior

Tyrone Cassidy as English Officer

Oliver MacGreevy as Headsman (uncredited)

Joss Ackland as D'Artagnan's Father (archive footage) (uncredited)

Gretchen Franklin as D'Artagnan's Mother (archive footage) (uncredited)

Richard Briers as Louis XIII (voice) (uncredited)

John Bluthal as English Officer/Innkeeper and other roles (voice) (uncredited)