The 2025–26 St. Thomas Tommies men's basketball team represents the University of St. Thomas in the 2025–26 NCAA Division I men's basketball season. The Tommies, who are led by 15th-year head coach John Tauer, play home games at Lee and Penny Anderson Arena in Saint Paul, Minnesota as members of the Summit League. This is the Tommies' inaugural season at Lee and Penny Anderson Arena after spending the last 15 years at Shoenecker Arena.