Brian Tosh (born December 29, 1946 in Almonte, Ontario) is a retired Canadian defenceman. He played junior hockey for the Smiths Falls Bears of the Central Junior Hockey League from 1963 to 1967. In 1966-67, Tosh was named the league's outstanding defenceman. He was picked up by the Cornwall Royals for the 1966-67 Eastern Canada Memorial Cup Playoffs, where he broke his right hand in a fight with Marc Tardif.