The 2017–18 Duke Blue Devils men's basketball team represented Duke University during the 2017–18 NCAA Division I men's basketball season. They were coached by 38th-year head coach, Mike Krzyzewski. The Blue Devils played their home games at Cameron Indoor Stadium in Durham, North Carolina as members of the Atlantic Coast Conference. They finished the season 29–8, 13–5 in ACC play to finish in second place. They defeated Notre Dame in the quarterfinals of the ACC tournament before losing to North Carolina in the semifinals. They received an at-large bid to the NCAA tournament as the No. 2 seed in the Midwest region. There they defeated Iona, Rhode Island, and Syracuse to advance to the Elite Eight. In the Elite Eight, they lost to No. 1 seed Kansas in overtime. The 2017-18 Blue Devils team was one of the few teams in NCAA history to send their whole starting five pro in the off-season following their season. Four of them got drafted and another got signed as undrafted free agent. Throughout the season the whole starting five was in first round NBA draft projections.

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.