Horst Buchholz

Johann Strauss Jr.

Mary Costa

Jetty Treffz

Nigel Patrick

Johann Strauss Sr.

Yvonne Mitchell

Anna Strauss

Rossano Brazzi

Tedesco

Susan Robinson

Emilie Trampusch

George Howe

Karl Frederick Hirsch

Vicki Woolf

Lili Weyl

James Faulkner

Josef Strauss

Lauri Lupino Lane

Donmayer

Paola Loew

Princess Pauline Metternich

Ingrid Wayland

Theresa Strauss

Hermione Farthingale

Louise

Marty Allen

Johann Herbeck

Lorna Nathan

Olga

Elizabeth Muthsam

Caroline Strauss

Guido Wieland

Max Steiner

Willard Parker

Karl Treffz

Prince Johannes Schonburg-Hartenstein

Emperor Franz-Josef

Franz Aigner

Josef Weyl

Michael Tellering

Karl Haslinger

Ken Barrie

Johann Strauss Jr. (Singing voice, uncredited)