James Garner as Pete Aron

Eva Marie Saint as Louise Frederickson

Yves Montand as Jean-Pierre Sarti

Toshirō Mifune as Izō Yamura

Brian Bedford as Scott Stoddard

Jessica Walter as Pat Stoddard

Antonio Sabàto as Nino Barlini

Françoise Hardy as Lisa

Adolfo Celi as Agostini Manetta

Claude Dauphin as Hugo Simon

Enzo Fiermonte as Guido

Geneviève Page as Monique Delvaux-Sarti

Jack Watson as Jeff Jordan

Donald O'Brien as Wallace Bennett

Jean Michaud as Children's Father

Albert Rémy as Surgeon (as Albert Remy)

Rachel Kempson as Mrs. Stoddard

Ralph Michael as Mr. Stoddard

Alan Fordney as Sportscaster

Tommy Franklin as Sportscaster

Graham Hill as Bob Turner

Anthony Marsh as Sportscaster

Phil Hill as Tim Randolph

Bernard Cahier as Journalist

Masaaki Asukai as Japanese interpreter (uncredited)

Lorenzo Bandini as Grand Prix driver (uncredited)

Raymond Baxter as Self - BBC reporter (uncredited)

Roy Beck as Young spectator (uncredited)

Salvatore Billa as Policeman (uncredited)

Bob Bondurant as Grand Prix Driver (uncredited)

Jo Bonnier as Joakim Bonnier (uncredited)

Jack Brabham as Grand Prix driver (uncredited)

John Benson as David, photographer (uncredited)

Jim Clark as Jim Clark (uncredited)

Eugenio Dragoni as Ferrari official (uncredited)

Evans Evans as Mrs. Randolph (uncredited)

Tiziano Feroldi as Doctor at Monza (uncredited)

Paul Frees as Izo Yamura (voice) (uncredited)

Alain Gerard as American boy (uncredited)

Richie Ginther as John Hogarth (uncredited)

Noël Godin as Spectator (Spa) (uncredited)

Dan Gurney as Dan Gurney (uncredited)

Arthur Howard as Claude (uncredited)

Gilberto Mazzi as Rafael (uncredited)

Bruce McLaren as Douglas McClendon (uncredited)

Jochen Rindt as Jochen Rindt (uncredited)

Jo Siffert as Jo Siffert (uncredited)