The 2017–18 UC Riverside Highlanders men's basketball team represented the University of California, Riverside during the 2017–18 NCAA Division I men's basketball season.

The Highlanders, led by interim head coach Justin Bell, played their home games at the Student Recreation Center Arena in Riverside, California, as members of the Big West Conference.

8 seed in the Big West tournament, they lost in the quarterfinals to UC Davis.

On January 1, 2018, three days before conference play was to start, head coach Dennis Cutts, who was in his fifth season at UC Riverside, was fired after posting a 5–9 record to start the season.

8 seed in the Big West tournament, they were defeated by UC Irvine in the quarterfinals.