| Langdorf | |
| Image Coa: | DEU Langdorf COA.svg |
| Coordinates: | 49.0167°N 22°W |
| Image Plan: | Langdorf in REG.svg |
| State: | Bavaria |
| Region: | Niederbayern |
| District: | Regen |
| Elevation: | 645 |
| Area: | 34.38 |
| Postal Code: | 94264 |
| Area Code: | 09921 |
| Licence: | REG |
| Gemeindeschlüssel: | 09 2 76 129 |
| Website: | www.langdorf.de |
| Mayor: | Michael Englram[1] |
| Leader Term: | 2020 - 26 |
| Party: | CSU |
Langdorf is a municipality in the district of Regen in Bavaria in Germany. It was formerly known as Dorfmuri.