The 2023 Summit League men's basketball Tournament was the postseason men's basketball tournament for the Summit League for the 2022-23 season. All tournament games were played at the Denny Sanford Premier Center in Sioux Falls, South Dakota, from March 3-7, 2023.
All ten conference teams participated in the tournament following a change announced before the season began. This was the first year that St. Thomas participated in a Division I conference tournament in any sport. Teams were seeded by record within the conference, with a tiebreaker system to seed teams with identical conference records. The tiebreakers operated in the following order:
If a team that is not eligible for the NCAA Tournament wins the Summit League Tournament, the conference's automatic bid goes to the highest seeded postseason eligible team.
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The following players were named to the All-Tournament team: