Louis Christian August Glass (23 March 1864 – 22 January 1936) was a Danish composer.
Glass, born in Copenhagen, was almost an exact contemporary of
Carl Nielsen and, like Nielsen, was a student of
Niels Gade. However, Glass also studied at the Brussels Conservatory, where he became enamored of the music of
César Franck and
Anton Bruckner, both of whom stylistically influenced his writing. For several years, he was one of Denmark's leading concert pianists until a paralysis in one arm made him retire from the stage. He then devoted himself primarily to composing. He composed in most genres and wrote several chamber music works of worth, including four string quartets, a string sextet, a piano trio, a piano quintet and several instrumental sonatas.
He wrote six symphonies (1893–1926), which have been recorded on the Danacord record label, while some chamber music has been recorded on Da Capo.
Glass died in Copenhagen.