The 2015–16 Illinois Fighting Illini men's basketball team represented the University of Illinois at Urbana–Champaign in the 2015–16 NCAA Division I men's basketball season. Led by fourth year head coach John Groce, the Illini played their home games at State Farm Center and were members of the Big Ten Conference. In November 2015, the Prairie Capital Convention Center in Springfield, Illinois hosted Illinois Fighting Illini men's basketball for five games while renovations to the State Farm Center were completed. They finished the season 15–19, 5–13 in Big Ten play to finish in 12th place. The Illini defeated Minnesota and Iowa to advance to the quarterfinals of the Big Ten tournament, where they lost to Purdue.

The Bank of Springfield Center is a 7,700-seat multi-purpose arena located in Springfield, Illinois.