Karen A. McCrimmon OMM CD (born 1959) is a Canadian Forces veteran, mediator, and politician who was elected Member of Parliament for Kanata—Carleton in the 2015 Canadian federal election. After a 31-year military career, McCrimmon retired as a lieutenant colonel. She was the first female navigator and the first woman to command a Canadian Forces air force squadron. She became involved in federal politics with the Liberal Party of Canada in 2008. In 2011, McCrimmon was the Liberal candidate for the federal election in the Carleton—Mississippi Mills riding and, in 2013, she unsuccessfully bid for the Liberal leadership. In August 2021, she announced that she would retire from politics and did not seek re-election.