| Type: | suburb |
| Lenaghan | |
| City: | Newcastle |
| State: | nsw |
| Alternative Location Map: | Australia Hunter Central Coast |
| Lga: | City of Newcastle |
| Lga2: | City of Maitland |
| Postcode: | 2322 |
| Parish: | Hexham |
| Stategov: | Cessnock |
| Fedgov: | Newcastle |
| Dist1: | 20 |
| Dir1: | WNW |
| Location1: | Newcastle |
| Dist2: | 17 |
| Dir2: | SSE |
| Location2: | Maitland |
Lenaghan is an outer northwestern suburb of Newcastle, New South Wales, Australia, located 20km (10miles) from Newcastle's central business district. It is part of the City of Newcastle local government area.