| Westerheim | |
| Image Coa: | DEU Westerheim COA.svg |
| Coordinates: | 48.0167°N 28°W |
| Image Plan: | Westerheim in MN.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Unterallgäu |
| Verwaltungsgemeinschaft: | Erkheim |
| Elevation: | 602 |
| Area: | 21.17 |
| Postal Code: | 87784 |
| Area Code: | 08336 |
| Licence: | MN |
| Gemeindeschlüssel: | 09 7 78 214 |
| Website: | www.vg-erkheim.de |
| Mayor: | Christa Bail[1] |
| Leader Term: | 2020 - 26 |
Westerheim is a municipality in the district of Unterallgäu in Bavaria, Germany. The town has a municipal association with Erkheim.