The Horn Blows at Midnight

Jack Benny

Athanael

Alexis Smith

Elizabeth

Dolores Moran

Violinist / Fran Blackstone

Allyn Joslyn

Second Trumpeter / Osidro

Reginald Gardiner

Composer / Archie Dexter

Guy Kibbee

Radio Director / The Chief

John Alexander

First Trumpeter / Doremus

Franklin Pangborn

Radio Engineer / Sloan

Margaret Dumont

Mme. Traviata / Miss Rodholder

Robert Blake

Junior Pulplinsky

Ethel Griffies

Lady Stover

Paul Harvey

Hotel Manager Thompson

Mike Mazurki

Bass Player / Humphrey Rafferty

Truman Bradley

Radio Announcer

Murray Alper

Hotel Bell Captain (uncredited)

Whit Bissell

Heavenly Piccolo Player (uncredited)