The 2018–19 Weber State Wildcats men's basketball team represented Weber State University during the 2018–19 NCAA Division I men's basketball season.

The Wildcats were led by 13th-year head coach Randy Rahe and played their home games in the Dee Events Center in Ogden, Utah as members of the Big Sky Conference.

They finished the season 18–15, 11–9 in Big Sky play to finish in a three-way tie for fourth place.

They defeated Portland State in the quarterfinals of the Big Sky tournament to advance to the semifinals where they lost to Montana.

They lost in the quarterfinals of the Big Sky tournament to Northern Colorado.