Hazel McCallion, CM, is a Canadian politician and businesswoman who served as the 5th mayor of Mississauga, Ontario, from 1978 until 2014, the longest-serving mayor in the city’s history. She is the first and current Chancellor of Sheridan College, the Guardian of Trillium Health Partners, Chief Elder Officer (CEO) of Revera, and special advisor to the Premier of Ontario. Hazel has been awarded the Order of Canada.