| Image Coa: | DEU Petershagen-Eggersdorf COA.svg |
| Coordinates: | 52.5292°N 13.7911°W |
| Image Plan: | Petershagen-Eggersdorf in MOL.png |
| State: | Brandenburg |
| District: | Märkisch-Oderland |
| Elevation: | 52 |
| Area: | 17.47 |
| Postal Code: | 15370, 15345 |
| Area Code: | 033439 and 03341 |
| Licence: | MOL |
| Gemeindeschlüssel: | 12 0 64 380 |
| Divisions: | 2 Ortsteile |
| Website: | www.petershagen-eggersdorf.de |
| Mayor: | Marco Rutter[1] |
| Leader Term: | 2018 - 26 |
| Party: | FDP |
Petershagen-Eggersdorf is a municipality in the district Märkisch-Oderland, in Brandenburg, Germany.
The municipality, situated 30 km (19 mi) east of Berlin centre, comprises the main settlements of Petershagen and Eggersdorf.
The village is well connected to Berlin by the S-Bahn line S5 at the station of Petershagen Nord. The stop is so named (P. North) due to the existence of "Petershagen Süd" (P. South), a railway station on a line, now closed, from Fredersdorf to Rüdersdorf.