The following is a complete list of compositions by Austrian composer Alexander von Zemlinsky.

Der Kreidekreis (Op. 21), is an opera in three acts by Alexander von Zemlinsky to a libretto by the composer after the play Der Kreidekreis by Klabund – a telling of the Chalk Circle story. The opera was written during 1930-31 and premiered on 14 October 1933 in the Zürich Opera House. Among the singers were Artūrs Cavara, Maria Madlen Madsen Maria Bernhard-Ulbrich; Fred Destal, Georg Oeggl and Peter Klein; it was directed by Karl Schmid-Bloß and the stage design was by Roman Clemens. It was planned to premiere the work simultaneously on four German stages: Frankfurt, Berlin, Cologne, and Nuremberg. Because of Zemlinsky's Jewish ancestry, this became impossible when the Nazis came to power early in 1933. Nevertheless, the work was performed in January 1934 in Stettin, Coburg, Berlin and Nuremberg, and in Graz in February due to the temporary lifting of certain restrictions. The work was also performed in Prague and Bratislava. Zürich Opera revived the opera in 2003. A new production was staged at the Opera de Lyon in January 2018 directed by Richard Brunel and conducted by Lothar Koenigs.

Der Traumgörge (Görge the Dreamer), Op. 11, is an opera in two acts and an epilogue by Austrian composer Alexander Zemlinsky. The libretto was written by Leo Feld based on the fairy tale "Vom unsichtbaren Königreiche" by Richard von Volkmann and the poem "Der arme Peter" by Heinrich Heine. After the prepared premiere at the Vienna State Opera in 1907 did not happen, the work was finally first performed by the Staatstheater Nürnberg in 1980.

The following is a complete list of compositions by Austrian composer Alexander von Zemlinsky.

The following is a complete list of compositions by Austrian composer Alexander von Zemlinsky.

Eine florentinische Tragödie, Op. 16, is an opera in one act by Alexander von Zemlinsky composed in 1915–16 to a libretto adapted by the composer from a German translation by Max Meyerfeld of Oscar Wilde's unfinished play A Florentine Tragedy.

Es war einmal (Once upon a time) is a fairy-tale opera in a prologue and three acts by the Austrian composer Alexander von Zemlinsky, composed during 1897-99. The libretto, an adaptation of Marie von Borch's German translation of the fairy-tale play Der var engang by the Danish author Holger Drachmann, was written by Maximilian Singer.

Der König Kandaules (King Kandaules) is an opera in three acts by the Austrian composer Alexander von Zemlinsky. Its libretto was adapted by the composer from Franz Blei's German translation of the play Le roi Candaule by French author André Gide.