William Eugene Beauvais (born October 9, 1956) is a Canadian classical guitarist and composer who has performed in the United States, Europe, and across Canada.
Shortly after graduation he won first prize both at the Canadian Music Competition and in the Carrefour Mondial de Guitare in Martinque.
He has also worked with choreographers Terrill Maguire and Hedy Minton, as well as poets Steven McCabe, Richard Truhlar and Wayne Keon.
He has given many premier performances, including works George Crumb, Elliott Carter, Jon Siddall, Stephen Wingfield, Ronald Bruce Smith and Chris Harman.
More recently Beauvais has devoted much time to his own creative output writing music for The Montreal Guitar Trio, the Canadian Music Centre, Jeffrey McFadden and the Echo Women's Choir.