The Waterloo Colts was a professional ice hockey team from Waterloo, Ontario in Canada.

The team played for two seasons in the Ontario Professional Hockey League, from 1910 to 1911.

[1] Waterloo Colts best result in its two-year tenure in the OPHL was a second-place finish in 1911, when the team lost the league title to the Galt Professionals.

Waterloo lost the deciding game between the two teams 0-8 and missed out on a chance to challenge for the Stanley Cup.

[2] Notable players who played for the Waterloo Colts were center Joe Malone and defenseman George McNamara, who both are inducted in the Hockey Hall of Fame.