| Image Coa: | Wappen Elsnig.jpg |
| Coordinates: | 51.6°N 68°W |
| Image Plan: | Elsnig in TDO.png |
| State: | Sachsen |
| District: | Nordsachsen |
| Verwaltungsgemeinschaft: | Dommitzsch |
| Elevation: | 88 |
| Area: | 36.76 |
| Postal Code: | 04886 |
| Area Code: | 03421 u. 034223 |
| Licence: | TDO, DZ, EB, OZ, TG, TO |
| Gemeindeschlüssel: | 14730120 |
| Website: | www.dommitzsch.de |
| Mayor: | Stefan Schieritz[1] |
| Leader Term: | 2020 - 27 |
| Party: | FDP |
Elsnig is a municipality in the district Nordsachsen, in Saxony, Germany, located about 140 km southwest of Berlin.