| Image Coa: | DEU Obermaiselstein COA.svg |
| Coordinates: | 47.45°N 24°W |
| Image Plan: | Obermaiselstein in OA.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Oberallgäu |
| Elevation: | 859 |
| Area: | 25.02 |
| Postal Code: | 87538 |
| Area Code: | 08326 |
| Licence: | OA |
| Gemeindeschlüssel: | 09 7 80 131 |
| Mayor: | Frank Fischer[1] |
| Leader Term: | 2020 - 26 |
Obermaiselstein is a municipality and a village in the district of Oberallgäu in the German state of Bavaria.