| Honorific-Prefix: | The Honourable |
| Diane Lebouthillier | |
| Office: | Minister of Fisheries, Oceans, and the Canadian Coast Guard |
| Primeminister: | Justin Trudeau |
| Term Start: | July 26, 2023 |
| Predecessor: | Joyce Murray |
| Office1: | Minister of National Revenue |
| Primeminister1: | Justin Trudeau |
| Term Start1: | November 4, 2015 |
| Term End1: | July 26, 2023 |
| Predecessor1: | Kerry-Lynne Findlay |
| Successor1: | Marie-Claude Bibeau |
| Riding2: | Gaspésie—Les Îles-de-la-Madeleine |
| Parliament2: | Canadian |
| Term Start2: | October 19, 2015 |
| Predecessor2: | Philip Toone |
| Birth Date: | 5 February 1959 |
| Birth Place: | Newport, Quebec, Canada |
| Profession: | Social worker |
| Alma Mater: | Université de Moncton |
| Party: | Liberal |
| Residence: | Sainte-Thérèse-de-Gaspé, Quebec[1] |
Diane Lebouthillier (; born February 5, 1959) is a Canadian politician who has been the Minister of Fisheries, Oceans and the Canadian Coast Guard since July 2023. A member of the Liberal Party, Lebouthillier was elected to the House of Commons in the 2015 federal election and represents Gaspésie—Les Îles-de-la-Madeleine.
Lebouthillier's parents were born in the city of Gaspé, and they returned when she was four.[2] She graduated with a bachelor's degree in social work from the Université de Moncton. Prior to her career in politics, she was a local social worker, managing clients out of the CLSC (provincial community clinic) in Chandler. She worked with long-time Member of the National Assembly (MNA) Georges Mamelonet on social service issues in the region. She is a mother of three sons and has two grandsons.[3]
Lebouthillier was elected in 2010 as the Prefect of Le Rocher-Percé Regional County Municipality.
Lebouthillier was elected in the riding of Gaspésie—Les Îles-de-la-Madeleine during the 2015 federal election.[4]
Lebouthillier was appointed Minister of National Revenue in the federal Cabinet, headed by Justin Trudeau, on November 4, 2015.[5]
Lebouthillier was appointed Minister of Fisheries, Oceans, and the Canadian Coast Guard in the federal Cabinet, headed by Justin Trudeau, on July 26, 2023.[6]