The 1971 Atlantic Coast Conference Men's Basketball Tournament was held in Greensboro, North Carolina at the Greensboro Coliseum from March 11-13. South Carolina defeated North Carolina 52-51 to win the championship. This was the only ACC Tournament that South Carolina won and the last ACC Tournament in which they played. Lee Dedmon of North Carolina and John Roche of South Carolina tied as tournament MVPs. In the final, 6-3 Kevin Joyce out jumped 6-10 Lee Dedmon with seconds remaining to tap the ball to Tom Owens who was left alone under the basket. Owens made the layup to give South Carolina the win as time expired.
| Quarterfinals March 11, 1971 |
Semifinals March 12, 1971 |
Championship Game March 13, 1971 |
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| 1 | North Carolina | 76 | |||||||||||
| 8 | Clemson | 41 | |||||||||||
| 1 | North Carolina | 78 | |||||||||||
| 5 | Virginia | 68 | |||||||||||
| 4 | Wake Forest | 84 | |||||||||||
| 5 | Virginia | 85 | |||||||||||
| 1 | North Carolina | 51 | |||||||||||
| 2 | South Carolina | 52 | |||||||||||
| 2 | South Carolina | 71 | |||||||||||
| 7 | Maryland | 63 | |||||||||||
| 2 | South Carolina | 69 | |||||||||||
| 6 | NC State | 56 | |||||||||||
| 3 | Duke | 61 | |||||||||||
| 6 | NC State | 68 | |||||||||||
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