| 2011 ACC men's basketball tournament | |
|---|---|
 2011 ACC Tournament logo | |
| Classification | Division I |
| Season | 2010–11 |
| Teams | 12 |
| Site | Greensboro Coliseum Greensboro, North Carolina |
| Champions | Duke Blue Devils (19th title) |
| Winning coach | Mike Krzyzewski (13th title) |
| MVP | Nolan Smith (Duke) |
| Television | ESPN/Raycom Sports |
The 2011 ACC men's basketball tournament, a part of the 2010–11 NCAA Division I men's basketball season, took place from March 10 to March 13 at the Greensboro Coliseum in Greensboro, North Carolina.
In contrast to the upset-heavy tournament in 2010 where the 11 and 12 seeds reached the semifinals, there were only two games in the first two rounds in which the lower seed prevailed. Some notable games included the first round game between Miami and Virginia. The Cavaliers held a 10-point lead with 42 seconds left, but the Hurricanes scored 10 straight points at the end of regulation to send the game to overtime, where Miami eventually won. In the quarterfinal game between Florida State and Virginia Tech, the Hokies' Erick Green hit a shot to put Virginia Tech up 1 with 4.7 seconds left. Derwin Kitchen then hit what appeared to be the game-winning shot for the Seminoles, but the shot was waved off after review, and Virginia Tech advanced.
For the first time in 10 years, Duke and North Carolina played each other in the championship game. The top-seeded Tar Heels had come back from double-digit deficits in their victories against Miami and Clemson. Duke started strong as well, scoring the first 8 points and taking a 14-point lead at halftime. However, Duke did not relinquish their lead in the second half, as North Carolina never got closer than 9. Duke won, 75-58, to give the Blue Devils their 19th ACC championship, the most in ACC history. This title also tied Duke coach Mike Krzyzewski with former UNC coach Dean Smith for the most ACC championships, each having won 13.