1966 ACC men's basketball tournament

The 1966 Atlantic Coast Conference men's basketball tournament was held in Raleigh, North Carolina, at Reynolds Coliseum from March 3–5, 1966. Duke defeated NC State, 71–66, to win the championship for the fourth time. Steve Vacendak of Duke was named tournament MVP. This was the last ACC Tournament held at Reynolds Coliseum.

1966 ACC men's basketball tournament
Classification	Division I
Season	1965–66
Teams	8
Site	Reynolds Coliseum Raleigh, North Carolina
Champions	Duke (4th title)
Winning coach	Vic Bubas (4th title)
MVP	Steve Vacendak (Duke)
ACC men's basketball tournaments

1965–66 ACC men's basketball standings

	Conf							Overall
Team	W		L		PCT			W		L		PCT
No. 2 Duke †	12	–	2		.857			26	–	4		.867
NC State	9	–	5		.643			18	–	9		.667
Clemson	8	–	6		.571			15	–	10		.600
North Carolina	8	–	6		.571			16	–	11		.593
Maryland	7	–	7		.500			14	–	11		.560
South Carolina	4	–	10		.286			11	–	13		.458
Virginia	4	–	10		.286			7	–	15		.318
Wake Forest	4	–	10		.286			8	–	18		.308
† 1966 ACC tournament winner Rankings from AP Poll

Duke defeated all three of their in-state rivals on their way to the tournament championship, beating Wake Forest in the quarterfinal round, North Carolina in the semifinal, and NC State in the championship game.

Bracket

	Quarterfinals March 3					Semifinals March 4					Championship Game March 5
	1	#3 Duke	103
	8	Wake Forest	73
						1	#3 Duke	21
						4	North Carolina	20
	4	North Carolina	77
	5	Maryland	70
											1	#3 Duke	71
											2	NC State	66
	2	NC State	86
	7	Virginia	77
						2	NC State	75
						6	South Carolina	62
	3	Clemson	52
	6	South Carolina	60