| Image Coa: | Wappen altmittweida.png |
| Coordinates: | 50.9678°N 12.9578°W |
| Image Plan: | Altmittweida in FG.png |
| State: | Sachsen |
| District: | Mittelsachsen |
| Verwaltungsgemeinschaft: | Mittweida |
| Elevation: | 286 |
| Area: | 14.07 |
| Postal Code: | 09648 |
| Area Code: | 03727 |
| Licence: | FG |
| Gemeindeschlüssel: | 14522010 |
| Website: | Gemeinde Altmittweida |
| Mayor: | Jens-Uwe Miether[1] |
| Leader Term: | 2018 - 25 |
Altmittweida is a municipality in the district of Mittelsachsen, in Saxony, Germany.