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.
His notable pupils include, Marc Patch, Peter Allen, John Burke, Paul Crawford, Jacques Desjardins, José Evangelista, Anthony Genge, Richard Hunt, Denis Lorrain, John Oliver, Nicole Rodrigue, François Rose, Ronald Bruce Smith, Donald Steven, and Alexander Tilley.
At the age of 10 he won a prize in the 1949 Composers, Authors and Publishers Association of Canada composition competition.
He continued to study with Milhaud and with Simone Plé-Caussade, Lazare Lévy, and Olivier Messiaen at the Paris Conservatoire from 1959-1961.