| Image Coa: | Wappen jahnsdorf.png |
| Coordinates: | 50.7456°N 12.8544°W |
| Image Plan: | Jahnsdorf-Erzgeb. in ERZ.png |
| State: | Sachsen |
| District: | Erzgebirgskreis |
| Elevation: | 335 |
| Area: | 26.10 |
| Postal Code: | 09387 |
| Area Code: | 03721 (Jahnsdorf) 0371 (Leukersdorf u. Seifersdorf) 037296 (Pfaffenhain) |
| Licence: | ERZ |
| Gemeindeschlüssel: | 14521310 |
| Divisions: | 4 |
| Website: | www.jahnsdorf- erzgeb.de |
| Mayor: | Albrecht Spindler[1] |
| Leader Term: | 2023 - 30 |
Jahnsdorf is a municipality in the district Erzgebirgskreis, in Saxony, Germany.