The 2018–19 Pepperdine Waves men's basketball team represented Pepperdine University during the 2018–19 NCAA Division I men's basketball season. The Waves were led by head coach Lorenzo Romar, in the first season of his second stint after coaching the Waves from 1996 to 1999. They played their home games at the Firestone Fieldhouse in Malibu, California as members of the West Coast Conference. They finished the season 16–18, 8–10 in WCC play to finish in eighth place. They defeated Pacific, Loyola Marymount, and San Francisco to advance to the semifinals of the WCC tournament were they were defeated by Gonzaga.