Der Kongress tanzt (English: The Congress Dances) is a German musical comedy film produced in 1931 by Ufa, directed by Erik Charell, starring Lilian Harvey as Christel Weinzinger, the glove seller, Willy Fritsch as Tsar Alexander I of Russia and his doppelgänger, Uralsky, Otto Wallburg as Bibikoff, his Adjutant, Conrad Veidt as Prince Metternich, Carl-Heinz Schroth as his Secretary, Pepi, Lil Dagover as the Countess and Alfred Abel as the King of Saxony.

Der Kongress tanzt is a particularly well achieved move in Ufa's attempt to challenge US supremacy in the European film arena, taking advantage of the introduction of sound.

As such, the studio released the movie in three different language versions (MLV): in German, in French as Le congrès s'amuse, and English as Congress Dances.

Despite the ambition and the auspicious beginning, Ufa's challenge to US supremacy never materialized, both due to the strength of the Hollywood majors and to the constraints Germany's creative film and performers would suffer from 1933 onwards.

Traveling incognito among the people in the tradition of his ancestor Peter the Great, Russia's Tsar Alexander crosses paths with young Christel Weinzinger.