The 2017–18 Illinois Fighting Illini women's basketball team represented the University of Illinois during the 2017–18 NCAA Division I women's basketball season.

The Fighting Illini, led by first-year head coach Nancy Fahey, played their home games at State Farm Center as members of the Big Ten Conference.

They lost in the first round of the Big Ten women's tournament to Penn State.

They advanced to the second round of the Big Ten women's tournament where they lost to Purdue.

[1] On March 22, the school hired five-time Division III national champion and two-time Division III coach of the year recipient Nancy Fahey as head coach.