The 2018–19 Arizona State Sun Devils men's basketball team represented Arizona State University during the 2018–19 NCAA Division I men's basketball season.

The Sun Devils, led by fourth-year head coach Bobby Hurley, played their home games at Wells Fargo Arena in Tempe, Arizona as members of Pac–12 Conference.

In the Pac-12 tournament, the Sun Devils defeated UCLA in the quarterfinals and lost to Oregon in the semifinals.

They received an at-large bid to the NCAA tournament where they defeated St. John's in the First Four, and eventually lost in the First round to Buffalo.

They received an at-large bid to the NCAA tournament where they lost in the First Four to Syracuse.