Joseph Thomas Hector Gratton (13 August 1900 – 16 July 1970) was a Canadian composer, arranger, conductor, pianist, and music educator.
In 1937 his symphonic poem Légende won the Jean Lallemand Prize which led to the work's premiere performance that year by the Montreal Symphony Orchestra under conductor Wilfrid Pelletier.
From La Liberté he gained a great appreciation for the works and aesthetics of Nikolai Medtner and Alexander Scriabin, two composers which influenced his own compositional style.
He composed and conducted music for Je me souviens, one of the first major Canadian radio series which featured scripts by Félix Leclerc.
Also notable among his compositions for CBC Radio was the incidental music for Cécile Chabot's 1945 Christmas story L'Imagerie.