The 2018–19 New Mexico Lobos men's basketball team represented the University of New Mexico during the 2018–19 NCAA Division I men's basketball season.

The Lobos were led by second-year head coach Paul Weir.

They played their home games at Dreamstyle Arena, more commonly known as The Pit, in Albuquerque, New Mexico as members of the Mountain West Conference.

They defeated Wyoming in the first round of the Mountain West tournament before losing in the quarterfinals to Utah State.

They defeated Wyoming and Utah State to advance to the championship game of the Mountain West tournament where they lost to San Diego State.