The 2018–19 Seattle Redhawks men's basketball team represented Seattle University during the 2018–19 NCAA Division I men's basketball season.

The Redhawks, led by second-year head coach Jim Hayford, played their home games at the Redhawk Center, with two home games at the ShoWare Center, as members of the Western Athletic Conference.

They were defeated by Grand Canyon in the quarterfinals of the WAC tournament.

They received an invitation to the CollegeInsider.com Tournament, where they lost in the first round to Presbyterian.

[1] In the postseason, they defeated Texas–Rio Grande Valley to advance to the semifinals of the WAC tournament where they lost to New Mexico State.