Harvey Hart Director Karl Malden Disko Troop Actor Jonathan Kahn Harvey Cheyne Actor Ricardo Montalban Manuel Actor Johnny Doran Dan Actor Neville Brand Little Penn Actor Fred Gwynne Long Jack Actor Charles Dierkop Tom Platt Actor Jeff Corey Salters Actor Fritz Weaver Harvey Cheyne, Sr. Actor Stan Haze Cook Actor Redmond Gleeson Phillips Actor Shay Duffin Chief Steward Actor Milton Frome Mr. Atkins Actor Stanja Lowe Mrs. Cheyne Actor Len Wayland McLean Actor Don Plumley Captain Olley Actor Orville Young Captain Bush Actor Randy Faustino Boy Actor Norman Rosemont Producer John Gay Screenwriter Allyn Ferguson Original Music Philip H. Lathrop Cinematographer John McSweeney Jr. Film Editing Hilyard M. Brown Production Design