| Au i.d. Hallertau | |
| Image Coa: | Wappen Au in der Hallertau.png |
| Coordinates: | 48.5575°N 11.7417°W |
| Image Plan: | Au in der Hallertau in FS.svg |
| State: | Bayern |
| Region: | Oberbayern |
| District: | Freising |
| Elevation: | 452 |
| Area: | 54.99 |
| Postal Code: | 84072 |
| Area Code: | 08752 |
| Licence: | FS |
| Gemeindeschlüssel: | 09 1 78 116 |
| Website: | www.markt-au.de |
| Mayor: | Hans Sailer[1] |
| Leader Term: | 2020 - 26 |
| Party: | FW |
The municipality of Au in der Hallertau is located in the north of the district of Freising and in the southern part of the Hallertau, in Bavaria, Germany. Au is famous for its important role in hop planting and hop distribution.