| Image Coa: | DEU Arzbach COA.svg |
| Coordinates: | 50.38°N 7.75°W |
| Image Plan: | Arzbach in EMS.svg |
| State: | Rheinland-Pfalz |
| District: | Rhein-Lahn-Kreis |
| Verbandsgemeinde: | Bad Ems-Nassau |
| Elevation: | 200 |
| Area: | 9.93 |
| Postal Code: | 56337 |
| Area Code: | 02603 |
| Licence: | EMS, DIZ, GOH |
| Gemeindeschlüssel: | 07 1 41 201 |
| Website: | www.arzbach.de |
| Mayor: | Claus Eschenauer[1] |
| Leader Term: | 2019 - 24 |
Arzbach is a municipality in the district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany. It belongs to the association community of Bad Ems-Nassau.