Suzanne Blais-Grenier PC (March 2, 1936 – June 13, 2017) was a Canadian politician. Blais-Grenier was elected to the House of Commons of Canada in the 1984 federal election that brought Brian Mulroney to power. She represented the riding of Rosemont, Quebec. She was appointed to the Cabinet as Prime Minister Mulroney's first Minister of the Environment. Following the demotion, Blais-Grenier became increasingly critical of the Mulroney government. At the end of 1985, she resigned from Cabinet to protest the government's refusal to prevent the closure of an oil refinery in Montreal.