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.
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.