| Image Coa: | Wappen Pfaffenhausen.svg |
| Coordinates: | 48.1167°N 37°W |
| Image Plan: | Pfaffenhausen in MN.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Unterallgäu |
| Verwaltungsgemeinschaft: | Pfaffenhausen |
| Elevation: | 563 |
| Area: | 21.11 |
| Postal Code: | 87772 |
| Area Code: | 08265 |
| Licence: | MN |
| Gemeindeschlüssel: | 09 7 78 187 |
| Website: | www.pfaffenhausen.info |
| Mayor: | Thomas Leinauer[1] |
| Leader Term: | 2022 - 28 |
Pfaffenhausen is a municipality in the district of Unterallgäu in Bavaria, Germany. The town is seat of a municipal association with Breitenbrunn, Swabia, Oberrieden, Bavaria and Salgen.