Luise Adolpha Le Beau (25 April 1850 in Rastatt, Grand Duchy of Baden – 17 July 1927 in Baden-Baden) was a German composer of classical music. She studied with noted musicians Clara Schumann and Franz Lachner, but her primary instructor was Josef Gabriel Rheinberger. Like many other 19th century female composers, Le Beau began her career in music as a pianist, and later earned her living teaching, critiquing, and performing music.
