Jack Lemmon (Don Gallagher)
Lee Grant (Karen Wallace)
Brenda Vaccaro (Eve Clayton)
Joseph Cotten (Nicholas St. Downs, III)
Olivia de Havilland (Emily Livingston)
M. James Arnett (Passenger)
Richard Venture (Cmdr. Gray)
Janet Brady (Passenger)
Rickie Sorenson (Controller #2)
Anthony Battaglia (Benjy)
Dar Robinson (Larry)
Ron Burke (Passenger)
Peter Greene (Frogman #1)
Beverly Gill (Stewardess #3)
Bill Jelliffe (Controller #1)
George Whiteman (Passenger)
Tom Rosqui (Hunter)
Paul Tuerpé (Officer of the Deck)
Arthur Adams (Commander Reed)
Peter Fox (Lieutenant Tommy Norris)
John Kerry (Lieutenant Commander)
Elizabeth Cheshire (Bonnie Stern)
Ted Chapman (Chief)
Chris Lemmon (Radioman)
Mary Nancy Burnett (Radar Room Controller)
Charles Macauley (Admiral Corrigan)
George Kennedy (Joe Patroni)
James Stewart (Philip Stevens)
Monte Markham (Banker)
Kathleen Quinlan (Julie)
Gil Gerard (Frank Powers)
James Booth (Ralph Crawford)
Monica Lewis (Anne)
Maide Norman (Dorothy)
Pamela Bellwood (Lisa)
Arlene Golonka (Mrs. Jane Stern)
Tom Sullivan (Steve)
M. Emmet Walsh (Dr. Williams)
Michael Richardson (Walker)
Michael Pataki (Wilson)
George Furth (Gerald Lucas)
Darren McGavin (Stan Buchek)
Christopher Lee (Martin Wallace)
Robert Foxworth (Chambers)
Robert Hooks (Eddie)