The 2018–19 ASUN Conference men's basketball season began with practices in October 2018, followed by the start of the 2018–19 NCAA Division I men's basketball season in November.
Conference play began in January 2019 and concluded in March 2019.
Lipscomb and Liberty tied for the regular season championship and were named co-champions.
The ASUN tournament was held March 4–10 at campus sites as top seeds hosted each round.
On October 17, 2018, the conference announced its preseason honors and polls.