The 1907 ECAHA season was the second season of the Eastern Canada Amateur Hockey Association (ECAHA). Teams played a ten-game schedule. The Montreal Wanderers lost the Stanley Cup to the Kenora Thistles of the Manitoba Hockey Association mid-season, but went undefeated in the regular season to win the league championship. They proceeded to defeat Kenora in a two-game total goals series to win back the Cup.

The Montreal Wanderers were an amateur, and later professional, ice hockey team based in Montreal. The team played in the Federal Amateur Hockey League (FAHL), the Eastern Canada Amateur Hockey Association (ECAHA), the National Hockey Association (NHA) and briefly the National Hockey League (NHL). The Wanderers were four-time Stanley Cup winners. Prior to the formation of the NHL, the "Redbands" were one of the most successful teams in hockey.