Illinois Route 167 is an east–west state road entirely located in Knox County in western Illinois. It runs from U.S. Route 34 northeast of Wataga to Illinois Route 180 east of Victoria. Illinois 167 is 12.24 miles (19.70 km) long. The route is maintained by the Illinois Department of Transportation.

Route 167 begins at an intersection with U.S. Route 34 just north of the Wataga city limits. The route dips southeast into Wataga, crossing the BNSF Railroad before following the northern border of the city eastward. Route 167 runs east through rural Sparta Township. The route continues east into Copley Township, passing through more farmland. It passes to the south of a group of small lakes near a junction with County Route 12. The highway continues east into Victoria, where it is locally known as Main Street. It passes through a mixed residential and business area in the village. Route 167 continues east into Victoria Township, passing to the north of Snakeden Hollow State Fish and Wildlife Area. It intersects County Route 28 before terminating at Illinois Route 180. Route 167 is an undivided two-lane surface road for its entire length.

Route 167 was established between Wataga and Victoria in 1924. The first unpaved route between Wataga and Victoria was shown on the 1924 Illinois highway map, and this route was paved and numbered by 1929. By 1934, the route was extended to its present eastern terminus at Route 180.

The entire route is in Knox County.