| Coordinates: | 50.5997°N 13.0689°W |
| Image Plan: | Mildenau in ERZ.png |
| State: | Sachsen |
| District: | Erzgebirgskreis |
| Elevation: | 515 |
| Area: | 31.67 |
| Postal Code: | 09456 |
| Area Code: | 03733 |
| Licence: | ERZ, ANA, ASZ, AU, MAB, MEK, STL, SZB, ZP |
| Gemeindeschlüssel: | 14521400 |
| Divisions: | 5 |
| Website: | www.gemeinde-mildenau.de |
| Mayor: | Andreas Mauersberger[1] |
| Leader Term: | 2020 - 27 |
Mildenau is a municipality in the district of Erzgebirgskreis, in Saxony, Germany.
From 1952 to 1990, Mildenau was part of the Bezirk Karl-Marx-Stadt of East Germany.