Liebe und Eifersucht (Love and Jealousy) is a Singspiel, an opera with spoken dialogue, in three acts by the German composer and author E. T. A. Hoffmann, composed in 1807 on his own libretto based on the translation by August Wilhelm Schlegel of a play by Calderón.

[4][5] Michael Hofstetter, who staged a series of revivals of rarely played operas, conducted the Ludwigsburg Festival orchestra and singers from the Gärtnerplatztheater in performances[4][6] and a recording.

[2] The first production in Switzerland was mounted in Zurich in 2016 by the Free Opera Company, with dialogues in more modern German and a reduced orchestra, conducted by Emmanuel Siffert.

[6][2] The plot is marked by confusions in relationships, caused partly by disguise and by misunderstanding of signs and tokens of love.

[2][7] The music was described as inspired by Mozart, "everywhere marked by understanding and craftsmanship – and nowhere distinguished by genius.