The 1984–85 Duke Blue Devils men's basketball team represented Duke University. The head coach was Mike Krzyzewski and the team finished the season with an overall record of 23–8.

Michael William Krzyzewski, nicknamed "Coach K", is an American former college basketball coach. He served as the head coach at Duke University from 1980 to 2022, during which he led the Blue Devils to five national titles, 13 Final Fours, 15 ACC tournament championships, and 13 ACC regular season titles. Among men's college basketball coaches, only UCLA's John Wooden has won more NCAA championships (10). Krzyzewski is widely regarded as one of the greatest college basketball coaches of all time.