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Dianne Brushett (born October 11, 1942 in Bath, New Brunswick) is a Canadian politician.

Brushett is a member of the Liberal Party of Canada and a former Member of Parliament in the Canadian House of Commons, representing the riding of Cumberland—Colchester from 1993 to 1997. She served as the Atlantic Regional Assistant Whip while in Parliament. Brushett is divorced and has two children, Sean and Samara Richardson. She co-founded and managed Dominion Biologicals Ltd. until 1990. She has her Master's degree in Atlantic Canada Studies from St. Mary's University, and received her Canadian Securities license after leaving government in 1997. Brushett is a cancer survivor and lives in Truro, Nova Scotia. She previously served as the president of the Cumberland-Colchester-Musquodoboit Valley Liberal Association, ending in 2007.