| State: | IL |
| Type: | IL |
| Maint: | IDOT |
| Route: | 82 |
| Map Custom: | yes |
| Length Mi: | 28.84 |
| Length Round: | 2 |
| Length Ref: | [1] |
| Direction A: | South |
| Terminus A: | in Bishop Hill |
| Junction: | in Geneseo in Geneseo |
| Direction B: | North |
| Terminus B: | near Geneseo |
| Counties: | Henry |
| Established: | 1924[2] |
| Previous Route: | 81 |
| Previous Type: | IL |
| Next Type: | IL |
| Next Route: | 83 |
Illinois Route 82 (IL 82) is a rural north - south state highway in west central Illinois. It currently runs from Illinois Route 17 in Nekoma north to Illinois Route 92 near Joslin. This is a distance of 28.84miles.
Illinois 82 is an undivided, two-lane surface street for its entire length. It crosses the Edwards River, Interstate 80 (I-80), U.S. Route 6 (US 6), the Hennepin Canal and the Green River along its route. It also overlaps Illinois Route 81 in Cambridge.
SBI Route 82 was existing Illinois 82, extended to Illinois Route 40 via Illinois 92 and Illinois Route 172. This ended in the 1930s.