| Image Coa: | DEU Rettenberg COA.svg |
| Coordinates: | 47.5833°N 28°W |
| Image Plan: | Rettenberg in OA.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Oberallgäu |
| Elevation: | 805 |
| Area: | 60.08 |
| Postal Code: | 87549 |
| Area Code: | 08327 |
| Licence: | OA |
| Gemeindeschlüssel: | 09 7 80 137 |
| Mayor: | Nikolaus Weißinger[1] |
| Leader Term: | 2020 - 26 |
| Website: | www.rettenberg.de |
Rettenberg is a municipality in the district of Oberallgäu in Bavaria in Germany.