The 2018–19 Loyola Marymount Lions men's basketball team represents 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 play their home games at Gersten Pavilion in Los Angeles, California as members of the West Coast Conference. They finished the season 22-12, 8-8 in WCC Play to tie for 5th place. They lost in the second round of the WCC tournament to Pepperdine. They received an at-large bid to the College Basketball Invitational where they defeated California Baptist and Brown to advance to the semifinals where they lost to South Florida.