The Circus Princess (Russian: Принцесса цирка, romanized: Printsessa tsirka) is 1982 Soviet musical comedy, a screen version of the operetta of the same name (1926) by Emmerich Kálmán.

Between the "young nobleman" and the countess a romance arises, and soon a lavish wedding organized by the prince is staged right on the circus arena.

But in the midst of the celebration a portrait of Mr. X is brought, the prince tears off the mask from the picture, and everyone sees that the groom is in fact Mr. X!

The jubilant prince gloatingly tells to Palinskaya that she became the wife of a miserable circus performer, but then Mr. X unexpectedly intervenes.

The young man wants to marry his lover, but the harsh Madame Caroline, Tony's mother and the proprietress of the Hotel "Green Parrot", are absolutely against it.