Roman Toi (June 18, 1916 – May 7, 2018) was an Estonian-Canadian composer, choir conductor, and organist. Influenced by Ralph Vaughan Williams, Toi's music is melodic, lyrical, and melancholic in style. His compositional output includes nine cantatas (composed 1953–77), three symphonies (1969, 1972, 1974), and more than 80 choral works. Many of his compositions have become part of the standard Estonian choral repertoire.