| State: | KY |
| Type: | KY |
| Route: | 556 |
| Map Custom: | yes |
| Map Notes: | KY 556 highlighted in red |
| Length Mi: | 6.624 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | at Lytten |
| Direction B: | East |
| Terminus B: | in Sandy Hook |
| Counties: | Elliott |
| Previous Type: | KY |
| Previous Route: | 555 |
| Next Type: | KY |
| Next Route: | 557 |
Kentucky Route 556 (KY 556) is a 6.624adj=midNaNadj=mid state highway in Elliott County, Kentucky that runs from Kentucky Route 173 at Lytten to Kentucky Route 7 and Court Street in downtown Sandy Hook via Bigstone.