| Honorific-Prefix: | The Honourable |
| Steven MacKinnon | |
| Office: | Minister of Labour |
| Primeminister: | Justin Trudeau |
| Term Start: | July 19, 2024 |
| Predecessor: | Seamus O'Regan |
| Office1: | Minister of Seniors |
| Primeminister1: | Justin Trudeau |
| Term Start1: | July 19, 2024 |
| Predecessor1: | Seamus O'Regan |
| Office2: | Leader of the Government in the House of Commons (interim) |
| Term Start2: | January 8, 2024 |
| Term End2: | July 19, 2024 |
| Primeminister2: | Justin Trudeau |
| Predecessor2: | Karina Gould |
| Successor2: | Karina Gould |
| Office3: | Chief Government Whip |
| Primeminister3: | Justin Trudeau |
| Term Start3: | October 28, 2021 |
| Term End3: | January 8, 2024 |
| Predecessor3: | Mark Holland |
| Successor3: | Ruby Sahota |
| Office4: | Parliamentary Secretary to the Minister of Public Services and Procurement |
| Minister4: | Judy Foote Carla Qualtrough Anita Anand |
| Term Start4: | January 30, 2017 |
| Term End4: | October 28, 2021 |
| Predecessor4: | Leona Alleslev |
| Successor4: | Anthony Housefather |
| Riding5: | Gatineau |
| Parliament5: | Canadian |
| Term Start5: | October 19, 2015 |
| Predecessor5: | Françoise Boivin |
| Birth Name: | Steven Garrett MacKinnon |
| Birth Date: | September 28, 1966 |
| Birth Place: | Charlottetown, Prince Edward Island, Canada |
| Alma Mater: | |
| Party: | Liberal |
| Residence: | Gatineau, Quebec, Canada |
Steven Garrett MacKinnon (born September 28, 1966) is a Canadian Liberal politician who was elected to represent the riding of Gatineau in the House of Commons of Canada in the 2015 federal election.[1] On January 8, 2024, he was appointed to the cabinet of Justin Trudeau as Government House Leader while Karina Gould was on maternity leave. On July 19, 2024, he was appointed Minister of Labour and Minister of Seniors, succeeding Seamus O'Regan.[2]
MacKinnon was born in Charlottetown, Prince Edward Island, and studied business at the Université de Moncton and Queen's University. He served as an advisor to New Brunswick Premier Frank McKenna and Prime Minister Paul Martin. Later, he served as the Liberal Party of Canada's national director, and as the returning officer for the 2013 federal leadership election.[3]
MacKinnon worked several years for Hill+Knowlton Strategies, a global public relations firm, serving as Senior Vice President and National Practice Leader in the Financial Communications sector.[4]
He first ran for office in the 2011 federal election in Gatineau, finishing third and far behind Françoise Boivin, a former Liberal MP running for the New Democratic Party, and the then-incumbent Bloc Quebecois MP Richard Nadeau. MacKinnon ran again four years later, this time defeating Boivin, winning by a 2-to-1 margin. Boivin had amassed over sixty-percent of the popular vote in 2011.