The 1990 Labatt Brier, the Canadian men's curling championship, was held from March 4 to 11 in Sault Ste. Marie, Ontario. Ed Werenich of Ontario defeated Jim Sullivan of New Brunswick to win his second Brier. The runner-up finish by New Brunswick was their best Brier finish since the inaugural Brier back in 1927 where they also finished runner-up.