| Year: | 2018–19 |
| Team: | New Mexico State Aggies |
| Sport: | Basketball |
| Conference: | Western Athletic Conference |
| Short Conf: | WAC |
| Record: | 30–5 |
| Conf Record: | 15–1 |
| Head Coach: | Chris Jans |
| Hc Year: | 2nd |
| Asst Coach1: | James Miller |
| Asst Coach2: | David Anwar |
| Asst Coach3: | Jeff Mailhot |
| Stadium: | Pan American Center |
| Champion: | WAC regular season and tournament champions |
| Tourney: | NCAA tournament |
| Tourney Result: | First Round |
The 2018–19 New Mexico State Aggies men's basketball team represented New Mexico State University during the 2018–19 NCAA Division I men's basketball season. The Aggies, led by second-year head coach Chris Jans, played their home games at the Pan American Center in Las Cruces, New Mexico as members of the Western Athletic Conference. They finished the regular season 27–4 and 15–1 in WAC play to win the WAC regular season championship. In the WAC tournament, they defeated Chicago State, Texas–Rio Grande Valley, and Grand Canyon to become WAC Tournament champions. They received the WAC's automatic bid to the NCAA tournament, where they lost in the first round to Auburn. They also set a school record for wins in a season and won 30 games for the first time in team history.
The Aggies finished the 2017–18 season 28–6, 12–2 in WAC play to win the WAC regular season championship. In the WAC tournament, they defeated Chicago State, Seattle, and Grand Canyon to become WAC Tournament champions. They received the WAC's automatic bid to the NCAA tournament where they lost in the first round to Clemson.
Source:[1] |-!colspan=9 style=| Regular season|-!colspan=9 style=| WAC tournament|-!colspan=12 style=| NCAA tournament