The 1907–08 ECAHA season was the third season of the Eastern Canada Amateur Hockey Association (ECAHA). lasted from . Teams played a ten-game schedule. The Montreal Wanderers would win the league championship with a record of eight wins, two losses.
Ottawa opened their new Arena, hosting the Wanderers on January 11, 1908, overloading capacity with 7,100 attending. Ottawa defeated the Wanderers 12–2. Ottawa and Wanderers were tied for first going into their rematch on February 29, when the Ottawa manager J. P. Dickson resigned in a dispute over which train to take to Montreal. At the time, two trains were available for the trip, and the two would race, with betting taking place on the winner. In the actual game, the two defence stars Art Ross and Cyclone Taylor would lead end-to-end rushes, and the game would be tied until Taylor was injured, and Bruce Stuart and Walter Smaill would score for the Wanderers to win 4–2.
On January 18, Quebec would defeat Montreal 18–5, with Chubby Power scoring six.
Russell Bowie would score five in a game three times, Marty Walsh would have the biggest game, scoring seven, and six in another. Tom Phillips would score five twice, Herb Jordan would score six and five, and Jack Marshall would score five twice.