The 1983–84 DePaul Blue Demons men's basketball team represented DePaul University during the 1983–84 NCAA Division I men's basketball season.
They were led by head coach Ray Meyer, in his 42nd and final season at the school, and played their home games at the Rosemont Horizon in Rosemont.
18 ranking in the AP poll, the Blue Demons won their first 16 games – including victories over No.
In the second round, DePaul beat Illinois State to advance to the Sweet Sixteen where they were upset by Wake Forest in overtime, 73–71.
The Blue Demons finished the season 27–3 and ranked No.