Steven Glenwood MacLean (born December 14, 1954) is a Canadian astronaut. He was the President of the Canadian Space Agency, from September 1, 2008 to February 1, 2013. He was born in Ottawa, Ontario, and is married to Nadine Wielgopolski of Hull, Quebec. They have three children. He enjoys hiking, canoeing, flying, parachuting and gymnastics. He currently resides in Saint-Lambert, Quebec.