The Honourable Suzanne Blais-Grenier is a former Canadian politician.

Blais-Grenier was elected to the Canadian House of Commons in the 1984 federal election that brought Brian Mulroney to power. The newly elected Progressive Conservative Member of Parliament for Rosemont, Quebec was appointed to the Cabinet as Mulroney's first Minister of the Environment.

After mounting criticism from environmentalists following cuts to various programs and a lackluster performance over several months when being targetted by the Opposition in the House of Commons during question period, Blais-Grenier was demoted in 1985 to the postion of Minister of State for Transport.

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.

On September 20 1988 she was expelled from the Progressive Conservative caucus for refusing to withdraw allegations of kickbacks involving the Quebec wing of the party. She ran as an independent candidate in the November 1988 general election but was defeated by the Progressive Conservaitve candidate and came in fourth place with 2,060 votes.