| Type: | Stadtteil |
| Town: | Raguhn-Jeßnitz |
| Image Coa: | Wappen Altjeßnitz.png |
| Coordinates: | 51.6906°N 12.3219°W |
| State: | Sachsen-Anhalt |
| District: | Anhalt-Bitterfeld |
| Elevation: | 74 |
| Area: | 6.42 |
| Population: | 390 |
| Stand: | 2017 |
| Postal Code: | 06800 |
| Area Code: | 03494 |
| Licence: | ABI/BTF |
Altjeßnitz is a village and a former municipality in the district of Anhalt-Bitterfeld, in Saxony-Anhalt, Germany. Since 1 January 2010, it is part of the town Raguhn-Jeßnitz.[1]