- Anne Baxter
- Katherine Mary Sullivan
- Thomas Mitchell
- Mr. Thomas F. Sullivan
- Selena Royle
- Mrs. Alleta Sullivan
- Edward Ryan
- Albert Leo 'Al' Sullivan
- Trudy Marshall
- Genevieve 'Gen' Sullivan
- John Campbell
- Francis Henry 'Frank' Sullivan
- James Cardwell
- George Thomas Sullivan
- John Alvin
- Madison Abel 'Matt' Sullivan
- George Offerman Jr.
- Joesph Eugene 'Joe' Sullivan
- Roy Roberts
- Father Francis
- Ward Bond
- Lt. Cmdr. Robinson
- Steve Barclay
- Naval Talkers
- Charles Bates
- Rival Boy
- Barbara Brown
- Maternity Nurse
- Johnny Calkins
- Joe Sullivan as a Child
- Michael Chapin
- Rival Boy
- Roger Clark
- Minor Role
- Gene Collins
- Rival Boy
- Billy Cummings
- Matt Sullivan as a Child
- Marvin Davis
- Frank Sullivan as a Child
- Bobby Driscoll
- Al Sullivan as a Child
- Betty Farrington
- Mrs. Griffin
- Ronald Harris
- Chauncey Griffin
- Joe Haworth
- Stretcher Bearer
- Henry Hebert
- Politician at Boat Launching
- Selmer Jackson
- Damage Control Officer
- Mike Killian
- Junior Officer
- Bobby Larson
- Rival Boy
- George Lynn
- Officer
- Gerald Mackey
- Rival Boy
- Knox Manning
- Radio Commentator
- Mae Marsh
- Neighbor of Mrs. Griffin
- Mary McCarty
- Gladys
- Bert Moorhouse
- Naval Officer at Boat Launching
- John Nesbitt
- Admiral
- Eddie Nichols
- Rival Boy
- Elsa Peterson
- Nun
- Grandon Rhodes
- Naval Doctor
- Addison Richards
- Naval Captain
- Nancy June Robinson
- Genevieve Sullivan as a Child
- Merrill Rodin
- Rival Boy
- Bernard Sell
- Stretcher Bearer
- Harry Shannon
- Chief Petty Officer
- Mel Shubert
- Junior Officer
- Harry Strang
- Chief Petty Officer
- Buddy Swan
- George Sullivan as a Child
- Larry Thompson
- Yeoman
- Leon Tyler
- Rival Boy
- John Whitney
- Naval Talkers
- Frank Wilcox
- Officer
- Sally Yarnell
- Minor Role
