2018–19 ASUN Conference men's basketball season

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. It was the 41st season of ASUN Conference basketball.

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.

Preseason
On October 17, 2018, the conference announced its preseason honors and polls.

Preseason men's basketball coaches poll
(First place votes in parentheses)
 * 1) Lipscomb (7) 79
 * 2) FGCU (1) 66
 * 3) Liberty 63
 * 4) North Florida (1) 61
 * 5) Jacksonville 40
 * 6) NJIT 38
 * 7) Kennesaw State 26
 * 8) Stetson 20
 * 9) North Alabama 12

Preseason men's basketball media poll
(First place votes in parentheses)
 * 1) Lipscomb (44) 438
 * 2) FGCU (2) 374
 * 3) Liberty 338
 * 4) North Florida (2) 304
 * 5) Jacksonville (2) 254
 * 6) NJIT 203
 * 7) Kennesaw State 147
 * 8) Stetson 121
 * 9) North Alabama 71

Honors

 * Preseason Player of the Year: Garrison Mathews, Lipscomb
 * Preseason Defensive Player of the Year: Noah Horchler, North Florida
 * Fan-Voted Preseason Player of the Year: Kendall Stafford, North Alabama (640 votes)
 * Fan-Voted Preseason Defensive Player of the Year: Reilly Walsh, NJIT (93 votes)