SEC
Assuming you mean football..FSU has won/shared 12 ACC championships.
As of October 2023, the University of North Carolina (UNC) holds the record for the most Atlantic Coast Conference (ACC) championships in men’s basketball, with 18 titles. In football, Florida State University leads with 15 ACC championships. The ACC has a rich history with various teams excelling in different sports, but these two programs stand out in their respective categories.
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