William George Brewster (October 24, 1924 – November 13, 2014) was a Canadian politician, who represented the electoral district of Kluane in the Yukon Legislative Assembly from 1982 to 1996. He was a member of the Yukon Progressive Conservative Party until 1992, and the Yukon Party thereafter.Prior to his election to the legislature, Brewster organized and coached minor league hockey in Haines Junction. A sports facility in the town has been named in his honour.He died at the age of 90 in 2014.