Colleen Kay Sostorics (born December 17, 1979, in Kennedy, Saskatchewan) is a Canadian retired women's ice hockey defenseman.

She 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).

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).

Colleen Sostorics began playing hockey in her hometown of Kennedy, Saskatchewan, on the local boys' teams until the age of 17.

[5] In addition to the Canada West honours, Sostorics was named a Canadian Interuniversity Athletics Union (CIAU) All-Canadian after both the 1997–98 and 1998–99 seasons.

[2] In 2002, Sostorics was named to Canada's team for the 2002 Winter Olympics, held in Salt Lake City, Utah.