The 2018–19 Loyola Marymount Lions men's basketball team represented Loyola Marymount University during the 2018–19 NCAA Division I men's basketball season.

The Lions are led by fifth-year head coach Mike Dunlap.

They played their home games at Gersten Pavilion in Los Angeles, California as members of the West Coast Conference.

They received an at-large bid to the College Basketball Invitational, where they defeated California Baptist and Brown to advance to the semifinals.

They defeated Portland in the first round of the WCC tournament before losing in the quarterfinals to Gonzaga.