The 2014 Atlantic Coast Conference men's basketball tournament was the postseason men's basketball tournament for the Atlantic Coast Conference held from March 12–16 in Greensboro, North Carolina, at the Greensboro Coliseum. This was the first ACC Tournament to include 15 teams, a result of the conference adding Syracuse, Pitt, and Notre Dame, and also the last to feature Maryland, which left after the season for the Big Ten Conference. Seeds #5 through #9 received a first-round bye, and the top four seeds received a first- and second-round "double bye".