Owen Underhill (born January 26, 1954) is a Canadian composer, flutist and conductor based in Vancouver.
He is currently a professor of music at Simon Fraser University.
He has been an active contributor to the new music scene on the West Coast, as a flutist, as co-music director of Western Front New Music (1982-3), as the artistic director (1987–2000) of the Vancouver New Music Society, and as a conductor in Magnetic Band and the Turning Point Ensemble, for which he is also currently the Artistic Co-Director.