Assuming you mean football..FSU has won/shared 12 ACC championships.
duke
Maryland won three ACC championships (1974, 1975, 1976) under head coach Jerry Claiborne.
7 ... the Wolfpack were ACC outright champs in 1957, 1964, 1968, 1973, and 1979 and co-champs in 1963 and 1965.
SEC
duke has 27 acc mens basketballs championships while UNC has 18
North Carolina, Duke, NC State and Maryland
UNC and Duke tie for 17
one
Clemson has one ACC tournament title.
It depends what sport you are referring to. Basketball-2010 Football-1999
Clemson.They have 13 wins, just ahead of Florida State with 12 wins. Clemson won ACC in 1956, 58, 59, 65, 66, 67, 78, 81 (National Champions), 82, 86, 87, 88 and 91