| Type: | Stadt |
| Image Coa: | DEU Thannhausen COA.svg |
| Coordinates: | 48.2667°N 38°W |
| Image Plan: | Thannhausen in GZ.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Günzburg |
| Verwaltungsgemeinschaft: | Thannhausen |
| Elevation: | 499 |
| Area: | 20.02 |
| Postal Code: | 86470 |
| Area Code: | 08281 |
| Licence: | GZ |
| Gemeindeschlüssel: | 09 7 74 185 |
| Website: | www.thannhausen.de |
| Mayor: | Alois Held[1] |
| Leader Term: | 2020 - 26 |
Thannhausen (pronounced as /de/) is a town in the district of Günzburg, in Bavaria, Germany. It is situated on the river Mindel, southeast of Günzburg, and west of Augsburg.