Giovanni Simone Mayr Free sheet music
- Born: 14th June 1763
- Died: 2nd December 1845
- Birthplace: Mendorf near Altmannstein, Landkreis Eichstätt, Bavaria
Johann(es) Simon Mayr (also spelled Majer, Mayer, Maier), also known in Italian as Giovanni Simone Mayr or Simone Mayr was a German composer.