| Wallerstein | |
| Image Coa: | Wappen Wallerstein.svg |
| Coordinates: | 48.8833°N 36°W |
| Image Plan: | Wallerstein in DON.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Donau-Ries |
| Elevation: | 441 |
| Area: | 19.45 |
| Postal Code: | 86757 |
| Area Code: | 09081 |
| Licence: | DON |
| Gemeindeschlüssel: | 09 7 79 224 |
| Mayor: | Georg Stoller[1] |
| Leader Term: | 2023 - 29 |
| Website: | www.markt-wallerstein.de |
Wallerstein is a municipality and former principality in the district of Donau-Ries in Bavaria in Germany.
It was first mentioned in 1238 as Steinheim. For generations ruled by the House of Oettingen-Wallerstein, in 1806 Wallerstein became part of the Kingdom of Bavaria by the process of mediatisation. The family still owns the Wallerstein Castle and its surrounding land.