Steven Guilbeault (born June 9, 1970) is a Canadian environmentalist and politician.
A founding member of Équiterre, a Quebec environmental organization, he was also director and campaign manager for the Greenpeace Quebec chapter for ten years.
Guilbeault stepped down as senior director and spokesperson for Équiterre in November 2018 and in July 2019 was nominated as federal Liberal candidate in central Montreal riding Laurier–Sainte-Marie for the Canadian general election in October 2019.