Fritz Geißler (or Geissler) (16 September 1921 in Wurzen, Saxony – 11 January 1984 in Bad Saarow, Brandenburg) was one of the most important composers of the German Democratic Republic.
After the conclusion of this most inauspicious education he earned the means to continue private lessons in violin, piano, and music theory as a bar and coffee house fiddler in Leipzig.
After his release in 1948 he studied composition and viola at the music college in Leipzig under Max Dehnert, Arnold Matz and Wilhelm Weismann.
His pupils included Wilfried Krätzschmar, Peter Hermann, Reinhard Pfundt, Karl Ottomar Treibmann, Friedrich Schenker and Lothar Voigtländer.
His most important works are arguably the operas, including an adaptation (from 1968 to 1969) of Heinrich von Kleist's comedy Der zerbrochne Krug.