| Image Coa: | Wappen von Erdweg.svg |
| Coordinates: | 48.3167°N 29°W |
| Image Plan: | Erdweg in DAH.svg |
| State: | Bayern |
| Region: | Oberbayern |
| District: | Dachau |
| Elevation: | 500 |
| Area: | 36.03 |
| Postal Code: | 85253 |
| Area Code: | 08138 |
| Licence: | DAH |
| Gemeindeschlüssel: | 09 1 74 118 |
| Divisions: | 18 Ortsteile |
| Website: | www.erdweg.de |
| Mayor: | Christian Blatt[1] |
| Leader Term: | 2023 - 29 |
| Party: | CSU |
Erdweg is a municipality in the district of Dachau in Bavaria in Germany.