The 1989–90 UNLV Runnin' Rebels basketball team represented the University of Nevada Las Vegas in the 1989–90 NCAA Division I men's basketball season.

The team played its home games in the Thomas & Mack Center as a member of the Big West Conference.

As a result, the received the conference's automatic bid to the NCAA tournament as the No.

As a result, they received the conference's automatic bid to the NCAA tournament as the No.

In the 1990 Tournament - (The nickname "Runnin' Rebels" is unique to men's basketball at UNLV.