- Tyrone Power
- Lt. Ward Stewart
- Anne Baxter
- Jean Hewlett
- Dana Andrews
- Lt. Cmdr. Dewey Connors
- James Gleason
- Chief Mike 'Mac' McDonnell
- May Whitty
- Grandmother
- Harry Morgan
- Brownie
- Ben Carter
- Oliver Cromwell Jones
- Fred Aldrich
- German Seaman
- Stanley Andrews
- Shipwrecked Captain
- John Archer
- Curly Bowman
- David Bacon
- Lieutenant
- Brooks Benedict
- Angry Man at Hotel Registration Desk
- Lulu Mae Bohrman
- Undetermined Secondary Role
- Dorothy Brent
- Schoolgirl
- Frederic Brunn
- Q Boat Lieutenant
- Paul E. Burns
- Simmons - Desk Clerk
- Harry Carter
- Sailor
- Gene Collins
- Boy in Lifeboat
- James Conaty
- Hotel Desk Clerk
- Frank Conroy
- Capt. Bryson
- Frank Dawson
- Henry the Butler
- James Eagles
- Officer
- Edward Earle
- Wreckage Victim
- Chester Gan
- Lee Wong
- Charley Grapewin
- Pop
- Thurston Hall
- Senator from Texas
- Sally Harper
- Teenage Student
- George Holmes
- Crew Member
- Kathleen Howard
- Miss Bromley
- Sue Jolley
- Schoolgirl
- Florence Lake
- Doris - Jean's Roommate
- Peter Leeds
- Shore Police
- Trudy Marshall
- Telephone Operator
- Leila McIntyre
- Senator's Wife
- Betty McKinney
- Schoolgirl
- Malcolm 'Bud' McTaggart
- Sailor
- Edward McWade
- Crony
- James Metcalfe
- Undetermined Secondary Role
- Hans Moebus
- German Officer
- Edmund Mortimer
- Man at Hotel Registration Desk
- John Mylong
- Captain of Submarine
- Netta Packer
- Mother
- Tom Quinn
- Hotel Guest
- Otto Reichow
- German Signalman
- Gene Rizzi
- Seaman Rizzi
- Lionel Royce
- German Q-Boat Commander
- Floyd Shackelford
- Porter
- Paul Stanton
- Officer
- Charles Tannen
- Seaman Hammond
- Ruth Thomas
- Schoolgirl
- Sigfrid Tor
- German Soldier
- Nicholas Vehr
- Russian Officer
- Hans von Morhart
- Y Gun Operator
- Minor Watson
- Adm. Bob Stewart
- Cecil Weston
- Woman
- Bruce Wong
- First Waiter
- William Yetter Sr.
- Tanker Lieutenant
