Of the ten varsity teams, nine participate in the Canadian Collegiate Athletic Association (CCAA) as members of the Atlantic Colleges Athletic Association (ACAA), while the women's ice hockey team participates in Atlantic University Sport (AUS) of U Sports.

“Tommies” were known for their bravery and courage while travelling through the most dangerous grounds of the war.

[citation needed] The STU men's soccer team will host the 2024 CCAA Men's Soccer Championship at Grant-Harvey Turf Field during 6–9 November.

A men's ice hockey team at St. Thomas existed at least as early as 1916, though it is unclear if the earliest iterations of the team held varsity status.

The squad suspended operations several times during the 20th century, but was in continuous operation from 1979 through the 2015–16 season, at which time the university selected to discontinue the program for budgetary reasons.