Nelson Eddy
— Karl Lang
Risë Stevens
— Maria Lanyi
Nigel Bruce
— Bernard Fischer
Florence Bates
— Madame Helene
Dorothy Raye
— Magda
Paul Godkin
— Performer in Gypsy Cafe Sequence
Nydia Westman
— Liesel - Maid
Max Barwyn
— Anton
Charles Judels
— Klementov
Louis Adlon
Jimmy Alexander
— Singer - 'Seek the Spy' Sequence
Sig Arno
— Emile, Voice Coach
Leon Belasco
— Waiter at the Double Eagle
George Bookasta
— Messenger with Note
Robert Bradford
— Solo Bit in 'Thank the Lord the War is Over' Number
Lee Brent
— Performer in Gypsy Café Sequence
Lorraine Bridges
— Solo Bit in 'Thank the Lord the War is Over' Number
James B. Carson
— Stage Manager
Maurice Cass
— Flute Player
Peggy Drake
Yvette Duguay
— Child Singer in 'Seek the Spy' Sequence
Betty Jane Graham
— Autograph Seeker
Dorothy Morris
— Autograph Seeker
Eric Mayne
— Restaurant Patron