Louis Glass (23 May 1864 – 22 January 1936) was a Danish composer. Glass was a contemporary of Carl Nielsen, but unlike his more famous countryman, Glass worked in the romantic tradition, drawing strongly on inspiration from Richard Wagner, Anton Bruckner and César Franck. He was also a pianist and teacher. 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.