The University of Music and Theatre "Felix Mendelssohn Bartholdy" Leipzig (German: Hochschule für Musik und Theater "Felix Mendelssohn Bartholdy" Leipzig) is a public university in Leipzig (Saxony, Germany). Founded in 1843 by Felix Mendelssohn as the Conservatorium der Musik (Conservatory of Music),[n 1] it is the oldest university school of music in Germany.

The institution includes the traditional Church Music Institute founded in 1919 by Karl Straube (1873–1950). The music school was renamed ″Felix Mendelssohn Bartholdy″ after its founder in 1972. In 1992, it incorporated the Theaterhochschule "Hans Otto" Leipzig.

Since the beginning there was a tight relationship between apprenticeship and practical experience with the Gewandhaus and the Oper Leipzig, as well as theaters in Chemnitz (Theater Chemnitz), Dresden (Staatsschauspiel Dresden), Halle (Neues Theater Halle), Leipzig (Schauspiel Leipzig) and Weimar (Deutsches Nationaltheater in Weimar).

The university of music and theater is one of 365 places chosen in 2009 by the Cabinet of Germany and the Office of the Representative of German Industry and Trade for the campaign Germany – Land of Ideas.