The 2018–19 UTSA Roadrunners men's basketball team represented the University of Texas at San Antonio during the 2018–19 NCAA Division I men's basketball season.

The Roadrunners, led by third-year head coach Steve Henson, played their home games at the Convocation Center as members of Conference USA.

The Roadrunners finished the 2017–18 season 20–15, 11–7 in C-USA play to finish in fifth place.

They defeated UTEP in the first round of the C-USA tournament before losing in the quarterfinals to Marshall.

They were invited to the CollegeInsider.com Tournament where they defeated Lamar in the first round and received a second round bye before losing in the quarterfinals to Sam Houston State.