| Petersberg | |
| Elevation M: | 847 |
| Range: | Mangfall Mountains |
| Location: | Bavaria, Germany |
| Map: | Germany Bavaria |
| Label: | Petersberg |
| Label Position: | top |
| Coordinates: | 47.7125°N 12.1258°W |
Petersberg is a mountain in the Flintsbach municipality of Bavaria, Germany. Situated in the eastern foothills of the Mangfall Mountains, some 400 meters above the Inn valley, it is noteworthy for its (short-lived) medieval monastery of Saint Peter's on the Madron, the church of which however retained its importance as a pilgrimage site.