| Image Coa: | DEU Oy-Mittelberg COA.svg |
| Coordinates: | 47.6333°N 36°W |
| Image Plan: | Oy-Mittelberg in OA.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Oberallgäu |
| Elevation: | 929 |
| Area: | 60.24 |
| Postal Code: | 87466 |
| Area Code: | 08366 |
| Licence: | OA |
| Gemeindeschlüssel: | 09 7 80 128 |
| Mayor: | Theo Haslach[1] |
| Leader Term: | 2017 - 23 |
| Party: | CSU |
| Website: | www.oy-mittelberg.de |
Oy-Mittelberg is a municipality in the rural district Oberallgäu in Bavaria, Germany.
Oy-Mittelberg is situated in the Allgäu region in the foothills of the Allgäu Alps. The municipality consists of the villages of Burgkranzegg, Faistenoy, Haslach, Kressen, Maria-Rain, Mittelberg, Oberschwarzenberg, Oberzollhaus, Oy, Petersthal and Riedis. In addition to that there are several small hamlets.