| Coordinates: | 50.6236°N 7.5175°W |
| Image Plan: | Oberlahr in AK.svg |
| State: | Rheinland-Pfalz |
| District: | Altenkirchen |
| Verbandsgemeinde: | Altenkirchen-Flammersfeld |
| Elevation: | 195 |
| Area: | 2.82 |
| Postal Code: | 57641 |
| Area Code: | 02685 |
| Licence: | AK |
| Gemeindeschlüssel: | 07 1 32 083 |
| Mayor: | Anneliese Rosenstein[1] |
| Leader Term: | 2019 - 24 |
Oberlahr is a municipality in the district of Altenkirchen, in Rhineland-Palatinate, in western Germany.