Illinois Route 184 is a 5.87-mile (9.45 km) state road in the southern portion of the U.S. state of Illinois located entirely within Franklin County.

Route 184 is maintained by the Illinois Department of Transportation.

The route continues north through farmland, passing occasional buildings.

Route 184 is a two-lane surface road for its entire length.

[2] It was first marked on the 1929 Illinois highway map.