Spartans previously competed in the Central Atlantic Collegiate Conference (CACC) from 1965–66 to 1998–99.
St. Thomas Aquinas competes in 22 intercollegiate varsity teams: Men's sports include baseball, basketball, cross country, golf, ice hockey, lacrosse, soccer, sprint football, tennis, track & field and volleyball; while women's sports include basketball, bowling, cross country, field hockey, lacrosse, soccer, softball, tennis, track & field, triathlon and volleyball.
Men's and women's volleyball were added into its athletics program in the 2023–24 school year.
Club sports are also available at the college, including cheer and dance team and volleyball. The Spartans have a cross-campus rivalry with the Dominican University New York Chargers since they are geographically a mile away from each other. Their mascot is The Spartan.
== Notable alumni ==
Gordon Chiesa, assistant coach for the Memphis Grizzlies of the NBA
Barbara Corcoran, self-made real estate millionaire who sold her company The Corcoran Group …
