Glenn Ford as Lt. J.G. Max Siegel

Gia Scala as Melora Alba

Earl Holliman as Adam Garrett

Anne Francis as Lt. Alice Tomlen

Keenan Wynn as Gordon Ripwell

Fred Clark as Lt. Cmdr. Clinton T. Nash

Eva Gabor as Deborah Aldrich

Russ Tamblyn as Ens. Tyson

Jeff Richards as Lt. Ross Pendleton

Mickey Shaughnessy as Farragut Jones

Howard Smith as Admiral Junius Boatwright

Romney Brent as Mr. Alba - Melora's Father

Mary Wickes as Janie

Jack Straw as Lt. Cmdr. Gladstone

Robert Nichols as Lt. Cmdr. Hereford

John Alderson as Lt. Cmdr. Diplock

Jack Albertson as Rep. George Jansen

Charles Watts as Rep. Arthur Smithfield

Mike Steen as Marine Orderly (uncredited)