| Image Coa: | Wappen oberarnbach.jpg |
| Coordinates: | 49.3864°N 7.5894°W |
| Image Plan: | Oberarnbach in KL.svg |
| State: | Rheinland-Pfalz |
| District: | Kaiserslautern |
| Verbandsgemeinde: | Landstuhl |
| Elevation: | 331 |
| Area: | 5.08 |
| Postal Code: | 66851 |
| Area Code: | 06371 |
| Licence: | KL |
| Gemeindeschlüssel: | 07 3 35 031 |
| Website: | www.oberarnbach.de |
| Mayor: | Reiner Klein[1] |
| Leader Term: | 2019 - 24 |
| Party: | CDU |
Oberarnbach is a municipality in the district of Kaiserslautern, in Rhineland-Palatinate, western Germany.