The 2014–15 Illinois Fighting Illini men's basketball team represented the University of Illinois at Urbana–Champaign in the 2014–15 NCAA Division I men's basketball season. Led by third-year head coach John Groce, the Illini played their home games at State Farm Center in Champaign, Illinois as members of the Big Ten Conference. They finished the season 19–14, 9–9 in Big Ten play to finish in a tie for seventh place. They lost in the second round of the Big Ten tournament to Michigan. They received an invitation to the National Invitation Tournament where they lost in the first round to Alabama.

John Gordon Groce is an American college basketball coach, currently the head coach for the Akron Zips men's basketball team. Prior to coaching for Akron, he was the head coach at Illinois and Ohio.