The 2018–19 Northern Illinois Huskies men's basketball team represented Northern Illinois University during the 2018–19 NCAA Division I men's basketball season.

The Huskies were led by eighth-year head coach Mark Montgomery, and played their home games at the Convocation Center in DeKalb, Illinois as members of the West Division of the Mid-American Conference (MAC).

They finished the season 17–17 overall, 8–10 in MAC play, to finish in fourth place in the West Division.

7 seed in the MAC tournament, they advanced to the semifinals, where they lost to Bowling Green.

They lost in the first round of the MAC tournament to Kent State.