| Image Coa: | Wappen Allershausen (Bayern).svg |
| Coordinates: | 48.4167°N 47°W |
| Image Plan: | Allershausen in FS.svg |
| State: | Bayern |
| Region: | Oberbayern |
| District: | Freising |
| Verwaltungsgemeinschaft: | Allershausen |
| Elevation: | 442 |
| Area: | 26.56 |
| Postal Code: | 85391 |
| Area Code: | 08166 |
| Licence: | FS |
| Gemeindeschlüssel: | 09 1 78 113 |
| Divisions: | 14 Ortsteile |
| Website: | www.allershausen.de |
| Mayor: | Martin Vaas[1] |
| Leader Term: | 2020 - 26 |
Allershausen is a municipality in the district of Freising, in Upper Bavaria, Germany.