Jacob Weager (born 1756) was a farmer and political figure in Upper Canada. He represented Dundas in the Legislative Assembly of Upper Canada from 1800 to 1804.Jacob Weager, was a British Army Captain and Upper Canadian politician. He was born in the Rhinebeck, Dutchess County, Province of New York, the son of Everhart Weager and married to Mary Hare in 1784. He served in the King's Loyal Regiment of New York during the American Revolution.