The Manitoba & Northwestern Hockey Association was an early senior-level men's amateur ice hockey league, founded in 1903, and played one season, 1903-1904 before joining the Manitoba Hockey Association. It operated in the provinces of Manitoba and Ontario of Canada, and was an important league in the early development of ice hockey in Canada.
Teams
The Thistles would win the league championship, and challenge the Ottawa Senators in a best-of-three series in Ottawa. The Senators would win the series 2-1.