Lise Bacon was a Canadian politician who served as Deputy Premier of Quebec from 1985 to 1994. A member of the Quebec Liberal Party, she served as a Member of the National Assembly of Quebec (MNA) for the riding of Bourassa from 1973 to 1976 and again for the riding of Chomedey from 1981 to 1994. She was the second woman elected to the National Assembly after Marie-Claire Kirkland. She served as president of the Quebec Liberal Party from 1970 to 1973, making her the first woman elected president of a political party in Canada.