Martine Ouellet (born April 8, 1969) is a Canadian politician who served as leader of the Bloc Québécois from 2017 to 2018. She was the Minister of Natural Resources in the Quebec government from 2012 to 2014. Ouellet was first elected to the National Assembly of Quebec in a by-election on July 5, 2010, representing the electoral district of Vachon, standing as a candidate for Parti Québécois. On May 14, 2021, Ouellet announced her return to politics by creating a new provincial party: Climat Québec.