The 2018–19 Grand Canyon Antelopes men's basketball team represented Grand Canyon University during the 2018–19 NCAA Division I men's basketball season.

They were led by head coach Dan Majerle in his sixth season at Grand Canyon.

The Antelopes played their home games at the GCU Arena in Phoenix, Arizona as members of the Western Athletic Conference.

They defeated Seattle and Utah Valley to advance to the championship game of the WAC tournament, where they lost to New Mexico State.

They defeated UMKC and Utah Valley to advance to the championship game of the WAC tournament where they lost to New Mexico State.