| State: | KY |
| Type: | KY |
| Route: | 86 |
| Map Custom: | yes |
| Map Notes: | KY 86 highlighted in red |
| Maint: | KYTC |
| Length Mi: | 43.683 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | in Union Star |
| Junction: | near Hardinsburg |
| Direction B: | East |
| Terminus B: | near Cecilia |
| Counties: | Breckinridge, Hardin |
| Previous Type: | KY |
| Previous Route: | 85 |
| Next Type: | KY |
| Next Route: | 87 |
Kentucky Route 86 (KY 86) is a 43.683-longNaN-long state highway in Kentucky that runs from KY 144 in the unincorporated community of Union Star to U.S. Route 62 (US 62) southeast of Cecilia.