| State: | KY |
| Type: | KY |
| Route: | 426 |
| Map Custom: | yes |
| Map Notes: | KY 426 highlighted in red |
| Length Mi: | 3.395 |
| Length Round: | 3 |
| Length Ref: | [1] |
| Direction A: | West |
| Terminus A: | near St. Mary |
| Direction B: | East |
| Terminus B: | southwest of Lebanon |
| Counties: | Marion |
| Previous Type: | KY |
| Previous Route: | 425 |
| Next Type: | KY |
| Next Route: | 427 |
Kentucky Route 426 (KY 426) is a 3.395adj=midNaNadj=mid state highway in the U.S. state of Kentucky. The highway travels through rural areas of Marion County.
KY 426 begins at an intersection with KY 84 (Raywick Road) south-southwest of St. Mary, within the central part of Marion County. It travels to the east-southeast and curves to the southeast before meeting its eastern terminus, an intersection with U.S. Route 68 (US 68) and KY 55 (Jane Todd Crawford Trail / Campbellsville Road). Here, the roadway continues as Mullins Lane.[1]