Dean Martin as Matt Helm

Elke Sommer as Linka Karensky

Sharon Tate as Freya Carlson

Nancy Kwan as Wen Yu-Rang

Nigel Green as Count Massimo Contini

Tina Louise as Lola Medina

John Larch as MacDonald

John Brascia as Karl

Weaver Levy as Kim

Wilhelm von Homburg as Gregor

Bill Saito as Ching

Shuji J. Nozawa as Toki

Pepper Martin as Frankie

Ted Jordan as Guard

Chuck Norris as Man in the House of 7 Joys (uncredited)

Cara Peters as Miss Milkmaid (uncredited)

Ed Parker as Guard (uncredited)

Lynn Borden as Miss Long Distance (uncredited)

Frank Biro as Diplomat (uncredited)

Kenner G. Kemp as Officer in Hospital Room (uncredited)

Joe Lewis as Guard (uncredited)

Noel Drayton as Lord Hardwicke (uncredited)