The Heart of Illinois Conference is a Central Illinois based high school athletic conference in the Illinois High School Association (IHSA).
The conference was formed in 2006 from members of the Mid State and Sangamon Valley conferences.
[1] Eureka High School joined the conference in 2016 from the Corn Belt Conference.
The conference is divided into large and small divisions with Eureka, El Paso-Gridley, Fieldcrest, Deer Creek Mackinaw, Tri-Valley, and Ridgeview composing the large division and GCMS, Tremont, Heyworth, Le Roy, Fisher, and Flanagan-Cornell composing the small division.
[2] Blue Ridge was a part of the Small Division until 2018, when it left for the Little Okaw Valley Conference in 2018.