The 2017–18 St. John's Red Storm men's basketball team represented St. John's University during the 2017–18 NCAA Division I men's basketball season. They were coached by alumnus and Naismith Memorial Basketball Hall of Fame member Chris Mullin, in his third year at the school. They played their home games at Carnesecca Arena and Madison Square Garden as members of the Big East Conference. They finished the season 16–17, 4–14 in Big East play to finish in tie for ninth place. They beat Georgetown in the first round of the Big East tournament before losing to Xavier in the quarterfinals.