The 2018–19 UC Riverside Highlanders men's basketball team represented the University of California, Riverside in the 2018–19 NCAA Division I men's basketball season.

The Highlanders, led by first-year head coach David Patrick, competed at the SRC Arena.

UC Riverside was a member of the Big West Conference, and participated in their 18th consecutive season in that league.

In the postseason, UC Riverside lost to UC Davis in the quarterfinals of 2018 Big West Conference men's basketball tournament in Anaheim, California.

Roster Last update: 9 September 2018 [1] Source:[2]