| Image Coa: | Wappen Blaichach.svg |
| Coordinates: | 47.5333°N 26°W |
| Image Plan: | Blaichach in OA.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Oberallgäu |
| Elevation: | 737 |
| Area: | 50.18 |
| Postal Code: | 87544 |
| Area Code: | 08321, 08323 |
| Licence: | OA |
| Gemeindeschlüssel: | 09 7 80 115 |
| Mayor: | Christof Endreß[1] |
| Leader Term: | 2020 - 26 |
| Party: | CSU |
| Website: | www.blaichach.de |
Blaichach is a municipality in the district of Oberallgäu in Bavaria in Germany.