The 2023 Big West Conference men's soccer tournament was the postseason men's soccer tournament for the Big West Conference held on November 1 through 11, 2023.
The six-team single-elimination tournament consisted of three rounds based on seeding from regular season conference play.
[4][5] This was the fifth Big West tournament title for the UC Irvine program, and their first since 2013.
A tiebreaker was required to determine the fifth and sixth seeds for the tournament as Cal Poly and UC Riverside both finished with identical 3–3–3 conference records.
The teams played to a 1–1 draw during the regular season, so the second tiebreaker of goal differential was used.