Dean Martin as Matt Helm

Stella Stevens as Gail Hendricks

Daliah Lavi as Tina

Victor Buono as Tung-Tze

Arthur O'Connell as Joe Wigman

Robert Webber as Sam Gunther

James Gregory as MacDonald

Nancy Kovack as Barbara

Cyd Charisse as Sarita

David Bond as Dr. Naldi

John Reach as Traynor

Beverly Adams as Lovey Kravezit

Roger C. Carmel as Andreyev

Richard Devon as Domino

Margie Nelson as Specialty Dancer

Margaret Teele as Slaymate

Larri Thomas as Specialty Dancer

Leoda Richards as Nightclub Patron

Frank Gerstle as Frazer

Robert Phillips as Armed Man

John Willis as Master of Ceremonies

Grant Woods as Radio Man

Patrick Waltz as Hotel Clerk

Vikki Carr as Sarita (singing voice) (uncredited)

John Daheim as Student Guard (uncredited)

Sol Gorss as Pilot (uncredited)

Frank Hagney as Drunk (uncredited)

Chuck Hicks as Armed Man (uncredited)

Ted Jordan as Man (uncredited)

Ray Montgomery as Agent 'C' (uncredited)

Robert F. Simon as Big O associate (uncredited)

Tom Steele as Guard (uncredited)

Martin Abrahams as Pool Guest (uncredited)

Todd Armstrong as Guard (uncredited)

Barbara Burgess as Slaygirl (uncredited)

Amadee Chabot as Girl (uncredited)

Carol Cole as Cocktail Waitress (uncredited)

Myron Cook as Guard (uncredited)

Bill Couch as Armed Man (uncredited)

Dirk Evans as Armed Man (uncredited)

Virginia Ann Ford as Slaygirl (uncredited)

Robert Glenn as FBI Agent (uncredited)

George Golden as Club Patron (uncredited)

Joe Gray as Undetermined Secondary Role (uncredited)

Ed Haskett as Club Patron (uncredited)

Patrick Hawley as Eddie the Bartender (uncredited)

George Hoagland as Club Patron (uncredited)

Harry Holcombe as Agent 'X' (uncredited)

Susan Holloway as Slaygirl (uncredited)

Thomas Horton as Hunter (uncredited)

Art Koulias as Engineer (uncredited)

Gary Lasdun as Armed Man (uncredited)

Anna Lavelle as Specialty Dancer (uncredited)

Grace Lee as Oriental Girl (uncredited)

Karen Lee as Slaygirl (uncredited)

Nelson Leigh as Tung-Tze Agent (uncredited)

Victoria Lockwood as Slaygirl (uncredited)

Gay MacGill as Slaygirl (uncredited)

Mary Jane Mangler as Specialty Dancer (uncredited)

Gigi Michel as Slaygirl (uncredited)

Hans Moebus as Club Patron (uncredited)

Inga Neilsen as Statue (uncredited)

Scott Perry as Guard (uncredited)

Pat Renella as Man (uncredited)

Bruce Ritchey as Hunter (uncredited)

Pamela Rodgers as Slaygirl (uncredited)

Clark Ross as Club Patron (uncredited)

Cosmo Sardo as Waiter (uncredited)

Jeffrey Sayre as Club Patron (uncredited)

Tom Sweet as Guard (uncredited)

Rita Thiel as Slaygirl (uncredited)

Larri Thomas as Specialty Dancer (uncredited)

Glenn Thompson as Student Guard (uncredited)

Marilyn Tindall as Slaygirl (uncredited)

Richard Tretter as Guard (uncredited)

Vincent Van Lynn as Agent 'Z' (uncredited)

Jan Watson as Slaygirl (uncredited)

Guy Wilkerson as Farmer (uncredited)