[1] Belmont defeated top-seeded rival Lipscomb in the championship game, 74–69, to clinch their first Atlantic Sun men's basketball tournament.
The Bruins, therefore, received the Atlantic Sun's automatic bid to the 2006 NCAA tournament.
The Atlantic Sun saw some significant membership changes prior to the 2005–06 season, even though the A-Sun remained fixed at 11 programs.
Long-time member Georgia State departed for the CAA, Central Florida joined Conference USA, and Troy (formerly Troy State) left for the Sun Belt.
These eight teams were seeded based on regular season conference records and were all entered into the quarterfinal round.