Ethel Merman

Sally Adams

Donald O'Connor

Kenneth Gibson

Vera-Ellen

Princess Maria

George Sanders

Cosmo Constantine

Billy De Wolfe

Pemberton Maxwell

Helmut Dantine

Prince Hugo

Walter Slezak

August Tantinnin

Steven Geray

Prime Minister Sebastian

Ludwig Stössel

Grand Duke Otto

Lilia Skala

Grand Duchess Sophie

Charles Dingle

Senator Brockway

Emory Parnell

Senator Gallagher

Percy Helton

Senator Wilkins

Bess Flowers

Lady Seated Behind Duchess (uncredited)