Rudolf Lothar [rú:dolf ló:tar] (born Rudolf Lothar Spitzer, February 25, 1865, Budapest – died October 2, 1943, Budapest) was a Hungarian-born Austrian writer, playwright, critic and essayist.
1891 Der verschleierte König, drama1900 König Harlekin, play1900 Das Wiener Burgtheater1904 Tiefland, opera libretto set to music by Eugen d'Albert, based on the 1896 Catalan play Terra baixa by Àngel Guimerà1910 Kurfürstendamm, novel1910 Die drei Grazien, comedy1910 Der Herr von Berlin, novel1912 Liebesketten, opera libretto set to music by Eugen d'Albert based on Angel Guimerá’s Villa del mar, score available from Sibley Music Library Digital Scores Collection1916 Die Seele Spaniens1920 Casanovas Sohn, comedy1920 Li-Tai-Pe, Des Kaisers Dichter, opera libretto set to music by Clemens von Franckenstein1921 Der Werwolf, comedy1925 Die Kunst des Verführens1927 Der gute Europäer, comedy1927 Die Republik befiehlt, comedy1931 Friedemann Bach, opera libretto set to music by Paul Graener based on Brachvogel's novel of the same name1931 Der Papagei, comedy1931 Besuch aus dem Jenseits, drama1934 The Red Cat (German title: Die Nacht vor dem Ultimo), comedy 