James Stewart
Glenn Miller

June Allyson
Helen Burger Miller

Harry Morgan
Chummy MacGregor

Charles Drake
Don Haynes

George Tobias
Si Schribman

Barton MacLane
General Arnold

Sig Ruman
W. Kranz

Irving Bacon
Mr. Miller

James Bell
Mr. Burger

Kathleen Lockhart
Mrs. Miller

Katherine Warren
Mrs. Burger

Frances Langford
Frances Langford

Louis Armstrong
Louis Armstrong

Gene Krupa
Gene Krupa

William Challee
Dispatch Desk Sergeant (uncredited)

Ray Conniff
Trombonist in Glenn Miller Band (uncredited)

Kevin Corcoran
Steve Miller - Age 4 (uncredited)

Hal K. Dawson
Used Car Salesman (uncredited)

Lisa Gaye
Bobbysoxer (uncredited)

Lionel Hampton
Band Member (uncredited)

Ruth Hampton
Young Singer (uncredited)

Harry Harvey
Doctor (uncredited)

Bill Lee
The Mellowmen (uncredited)

Caryl Lincoln
Commuter (uncredited)

Dayton Lummis
Col. Spaulding, USAAF (uncredited)

Forbes Murray
Elevator Passenger (uncredited)

Damian O'Flynn
Col. Baker (uncredited)

Steve Pendleton
Lt. Col. Bassell (uncredited)

Thurl Ravenscroft
The Mellowmen (uncredited)

Davis Roberts
Black Man (uncredited)

Marion Ross
Polly Haynes (uncredited)

Carleton Young
Adjunct General (uncredited)