No, Illinois has never won the NCAA Men's Basketball Tournament.
Evanston, Illinois in 1939.
At Northwestern University in Evanston, Illinois
1. University of Illinois - Urbana Champaign
The Kentucky Wildcats won the NCAA basketball tournament in 1948.
Syracuse beat Kansas 81-78 to win the 2003 NCAA men's basketball tournament, marking the school's first tournament crown.
The first national basketball tournament was the National Invitational Tournament, the NIT. It preceded the start of the NCAA tourney. The first year of the NCAA Basketball Tournament was 1939.