Horst Buchholz
Johann Strauss Jr.
Mary Costa
Jetty Treffz
Nigel Patrick
Johann Strauss Sr.
Yvonne Mitchell
Anna Strauss
Rossano Brazzi
Tedesco
Vicki Woolf
Lili Weyl
James Faulkner
Josef Strauss
Paola Loew
Princess Pauline Metternich
Marty Allen
Johann Herbeck
Willard Parker
Karl Treffz
Susan Robinson
Emilie Trampusch
George Howe
Karl Frederick Hirsch
Lauri Lupino Lane
Donmayer
Ingrid Wayland
Theresa Strauss
Hermione Farthingale
Louise
Lorna Nathan
Olga
Elizabeth Muthsam
Caroline Strauss
Guido Wieland
Max Steiner
Prince Johannes Schonburg-Hartenstein
Emperor Franz-Josef
Franz Aigner
Josef Weyl
Michael Tellering
Karl Haslinger
Ken Barrie
Johann Strauss Jr. (Singing voice, uncredited)