2021 Horizon League men's soccer tournament

The quarterfinals of the tournament were held at campus sites, while semifinals and final took place at Oakland Soccer Field in Rochester, Michigan.

The six team single-elimination tournament consisted of three rounds based on seeding from regular season conference play.

Oakland finished as tournament champions after defeating Cleveland State 3–1 in the Final.

A tiebreaker was required to determine the sixth and final seed of the tournament as Robert Morris and Wright State both finished with 4–5–1 conference records.

Robert Morris earned the sixth seed by virtue of their 2–1 win over Wright State on October 2.