how many acc championships does duke have

Duke has 23 ACC men’s basketball tournament championships, the most of any school in the conference.

Since your question is phrased generally (“how many acc championships does duke have”), most fans and writers mean men’s basketball tournament titles when they talk about Duke and ACC championships. Duke’s own pre-2025 basketball materials list 22 ACC tournament titles, and updated records now show 23 ACC tournament crowns, along with numerous ACC regular-season titles across sports.