- Glenn Ford
- Lt. Cmdr. Barney Doyle
- Ernest Borgnine
- Lt. Archer 'Archie' Sloan
- Diane Brewster
- Jane Doyle
- Dean Jones
- Lt. Jake 'Fuzz' Foley
- L.Q. Jones
- 'Hash' Benson
- Philip Ober
- Adm. Samuel Setton
- Richard Carlyle
- Cmdr. Don Adams
- Fredd Wayne
- Orville 'Goldy' Goldstein
- Don Keefer
- Ens. Ron Milligan
- Robert Hardy
- Lt. Redley
- Paul Picerni
- Lt. Burt Fisher
- Kimberly Beck
- Dede Doyle
- Rudy Bukich
- Sub Crewman
- Oliver Cross
- Nightclub Patron
- Howard Dayton
- Walker
- Sam Edwards
- Coleman - Sub Radio Operator
- Biff Elliot
- Lt. Paul Buckeye
- Al Freeman Jr.
- Sam Baker
- Frank Gorshin
- Sub Crewman
- Norman Grabowski
- Sub Crewman
- Joseph La Cava
- Waiter
- Jack Littlefield
- Sub Crewman
- Frank London
- Al Garrity
- Karl Lukas
- Hallert
- Celeste Madamba
- Terese
- Joe McCabe
- Primo
- Edward McNally
- Pete Waldeman
- Peter Miller
- Jojo Hunter
- Monty O'Grady
- Nightclub Patron
- Lyn Osborn
- Hannigan - Sub Crewman
- Hugh Pryor
- Jennings
- Louis Quinn
- Sub Crewman
- Don Reardon
- Sub Crewman
- Robert Reed
- Woolsey
- Jeffrey Sayre
- Nightclub Patron
- William Schallert
- Capt. Randy Vandercook - Skipper of the 'Bluefin'
- Ken Wales
- Meadows
- James Winslow
- Sub Crewman
