Lorne Matheson Betts (August 2, 1918 – August 5, 1985) was a Canadian composer, conductor, organist, and music critic. A member of the Canadian League of Composers and an associate of the Canadian Music Centre, many of his original scores and writings are part of the collection at the National Library of Canada. His compositional output includes two operas, two symphonies, two piano concertos, three string quartets, many songs and choral pieces, and other orchestral and chamber works.