Stephen Alphonse "Coo" Dion (December 23, 1886 – April 10, 1959) was a Canadian amateur ice hockey player and soldier.

Dion, a rover or a centre forward position wise, played two games for the Ottawa Hockey Club during the 1905–06 ECAHA season, scoring one goal.

He also played two games for the Ottawa Hockey Club during the 1905–06 ECAHA season, scoring one goal, thus being part of the team which held the Stanley Cup in February 1906.

[7] When leaving Europe for Canada on the S/S Hesperian, embarking from Liverpool to Montreal, the ship was hit by a German submarine outside the Irish coast on September 4, 1915.

I received two bullet wounds in the left arm, shattering the bones, and I had to crawl back a mile and a half through a shell swept zone."