| State: | KY |
| Type: | KY |
| Route: | 1978 |
| Alternate Name: | Greendale Road |
| Maint: | KYTC |
| Map Custom: | yes |
| Map Notes: | KY 1978 highlighted in red |
| Length Round: | 3 |
| Length Ref: | [1] |
| Direction A: | South |
| Direction B: | North |
| Previous Type: | KY |
| Previous Route: | 1977 |
| Next Type: | KY |
| Next Route: | 1979 |
Kentucky Route 1978 (KY 1978), known locally as Greendale Road, is an urban secondary state highway located entirely in northern Fayette County in East Central Kentucky. The mainly traverses the northwestern outskirts of Lexington.[1]
KY 1978 originates Leestown Pike (US 421) in the northwestern outskirts of Lexington. It crosses Citation Boulevard before ending with a junction with KY 1977 in the Greendale neighborhood in north Lexington.[2]