| Image Coa: | Wappen von Arrach.svg |
| Coordinates: | 49.2°N 13°W |
| Image Plan: | Arrach in CHA.svg |
| State: | Bayern |
| Region: | Oberpfalz |
| District: | Cham |
| Elevation: | 490 |
| Area: | 28.80 |
| Postal Code: | 93474 |
| Area Code: | 0 99 43 |
| Licence: | CHA |
| Gemeindeschlüssel: | 09 3 72 113 |
| Divisions: | 13 Ortsteile |
| Website: | www.arrach.de |
| Mayor: | Gerhard Mühlbauer[1] |
| Leader Term: | 2020 - 26 |
| Party: | FW |
Arrach is a municipality in the district of Cham in Bavaria in Germany. It lies within the scenic valley of the Lamer Winkel.