Bruce Mather (born May 9, 1939) is a Canadian composer, pianist, and writer who is particularly known for his contributions to contemporary classical music. One of the most notable composers of microtonal music, he was awarded the Jules Léger Prize twice, first in 1979 for his Musique pour Champigny and again in 1993 for Yquem. Some of his other awards include the Composers, Authors and Publishers Association of Canada's Micheline Coulombe Saint-Marcoux prize in 1987 for Barbaresco and the Serge Garant Prize from the Émile Nelligan Foundation in 2000.