2009–10 ACC men's basketball standings
	Conf				Overall
Team	W		L	PCT	W		L	PCT
#3 Duke †	13	–	3	.813	35	–	5	.875
#20 Maryland	13	–	3	.813	24	–	9	.727
Florida State	10	–	6	.625	22	–	10	.688
Virginia Tech	10	–	6	.625	25	–	9	.735
Wake Forest	9	–	7	.563	20	–	10	.667
Clemson	9	–	7	.563	21	–	11	.656
Georgia Tech	7	–	9	.438	23	–	13	.639
Boston College	6	–	10	.375	15	–	16	.484
Virginia	5	–	11	.313	15	–	16	.484
North Carolina	5	–	11	.313	20	–	17	.541
NC State	5	–	11	.313	20	–	16	.556
Miami (FL)	4	–	12	.250	20	–	13	.606

† ACC Tournament winner As of March 19, 2010; Rankings from AP Poll

The 2010 Atlantic Coast Conference Men's Basketball Tournament, a part of the 2009-10 NCAA Division I men's basketball season, took place from March 11–March 14 at the Greensboro Coliseum in Greensboro, North Carolina.

This tournament was notable for the high number of upsets, with the higher seed winning only twice in the first two rounds, and the 11 and 12 seeds progressing to the semifinals. The championship game matched Duke against Georgia Tech. It was the third time a team has played 4 games (NC State in 1997 and 2007). Duke won the championship game, 65–61, to win its 9th ACC championship in 12 years. Duke went on to win the national championship.

Teams are seeded based on the final regular season standings, with ties broken under an ACC policy.

AP Rankings at time of tournament

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