Illinois Route 93 is an east–west state road in central Illinois. It runs from Illinois Route 91, one mile (1.6 km) west of Elmira to Illinois Route 40, one mile (1.6 km) west of Bradford. This is a distance of 9.60 miles (15.45 km).

Illinois 93 is a rural, two-lane undivided surface road for its entire length. It begins at Illinois Route 40 (IL 40) just west of Elmira. It travels west and curves north slightly, passing through southern Elmira. Route 93 continues east through slight hills for the majority of its length, passing no major roads. After a curve south, it passes IL 40, forming a concurrency, and enters Bradford, the only incorporated community along its route. Its eastern terminus is at IL 40 in central Bradford.

SBI Route 93 originally ran from Galva to Bradford, with a southern spur to Toulon. In the early 1930s, U.S. Route 34 replaced Illinois 93 from west of Galva to west of Elmira. In 1936, Illinois Route 91 replaced the remaining segment west of Elmira to the spur, and then south to Toulon.

The entire route is in Stark County.