The 1909–10 Illinois Fighting Illini men's basketball team represented the University of Illinois.

The Illinois Fighting Illini men's basketball team is an NCAA Division I college basketball team competing in the Big Ten Conference, that represent the University of Illinois Urbana-Champaign. Home games are played at the State Farm Center, located on the University of Illinois Urbana-Champaign's campus in Champaign. Illinois has one pre-tournament national championship and one non-NCAA tournament national championship in 1915 and 1943, awarded by the Premo-Porretta Power Poll. Illinois has appeared in the NCAA Division I men's basketball tournament 34 times, and has competed in 5 Final Fours, 10 Elite Eights, and has won 18 Big Ten regular season championships, and 4 Big Ten Tournament Championships.