These events occured in 1906 in the world of hockey:
3 January — the Eastern Canada Amateur Hockey Association (ECAHA) begins its inaugural season
- February — Ottawa Hockey Club defeats Queen's College of Kingston, Ontario in a Stanley Cup challenge
- March — Ottawa defeats Smiths Falls, Ontario 2 games to 0 in another Stanley Cup challenge
- March — Ottawa and Montreal Wanderers tie for first place in the ECAHA league's regular season with 9–1 records. The two clubs hold a playoff to determine the ECAHA and Stanley Cup champion. The Wanderers win the series for their first Stanley Cup win, defeating the Silver Seven 2 games to 1.