2020–21 UC San Diego Tritons men's basketball team

The 2020–21 UC San Diego Tritons men's basketball team represented the University of California, San Diego in the 2020–21 NCAA Division I men's basketball season. The Tritons, led by eighth-year head coach Eric Olen, were in their first season at the NCAA Division I level and played their games at RIMAC Arena as a member of the Big West Conference. Because of the transition period, games in the Big West did not count towards the standings or conference record, and the Tritons were ineligible for the postseason, including the Big West tournament.

Previous season
The Tritons finished the 2019–20 season with a 30–1 record, 21–1 in California Collegiate Athletic Association (CCAA) play, to finish first in the CCAA. They later won the CCAA conference tournament with a 76–62 win over Cal Poly Pomona.

Schedule and results
!colspan=9 style=| Regular season

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