Colleen Kay Sostorics is a Canadian retired women's ice hockey defenseman. She played extensively for Canada at the international level, including three Olympic gold medals. At the Women's World Championships, Sostorics helped Canada to three gold and three silver medals, and at the 4 Nations Cup, she captured five gold medals and one silver medal. When not playing with Canada, she competed at the club level for the Calgary Oval X-Treme, in the Western Women's Hockey League (WWHL).