Colleen Kay Sostorics (born December 17, 1979 in Kennedy, Saskatchewan) is a retired Canadian women's ice hockey defenseman. She has played extensively for Canada at the international level, including three Olympic gold medals (2002 in Turin, 2006 in Salt Lake City, and 2010 in Vancouver). At the Women's World Championships, Sostorics has helped Canada to three gold and three silver medals, and at the 4 Nations Cup, she has captured five gold medals and one silver medal.