The 1973 CIAU Men's University Cup Hockey Tournament (11th annual) was held at the Varsity Arena in Toronto, Ontario. The Toronto Varsity Blues served as tournament host.
The Championship game was played between two teams that were both undefeated prior to the match. By winning, Toronto became the second undefeated champion in CIAU hockey history.
<small>Note: * denotes overtime period(s)</small>
<small>Note: * denotes overtime period(s)</small>
<small>Note: * denotes overtime period(s)</small>
No playoff
No playoff
In order to cut down on travel expenses, the WCIAU had split into two conferences in the offseason; the GPAA and Canada West. However, while the champion of both would be invited into the tournament, an arrangement was made where both would play one another in a quarterfinal round that would serve as a de facto championship for Western Canada. The remaining teams were sorted by committee. The Quarterfinal and Semifinal rounds were best of three series and the third place game was discontinued.
<small>Note: * denotes overtime period(s)</small><br>