The Illini Prairie Conference is a high school athletic conference in the Illinois High School Association (IHSA), based in Central Illinois. The conference consists of ten medium-sized and small high schools and is a merger of the Corn Belt Conference and the Okaw Valley Conference. Conference athletics will begin in the 2017-18 school year.
Member schools of the Corn Belt Conference and the Okaw Valley Conference began discussing a merger after the announced departures of Eureka High School and Mahomet-Seymour High School from the Corn Belt Conference in 2014 and 2015. Principals of the ten schools voted unanimously in February 2016 to begin plans to merge the conferences. School boards of the ten schools approved the new conference in March and April 2016. Student bodies of each school submitted favorite names for the conference to the principals. Illini Prairie was selected unanimously by the principals.