| Type: | Ortsteil |
| Town: | Zahna-Elster |
| Coordinates: | 51.8667°N 12.8467°W |
| State: | Sachsen-Anhalt |
| District: | Wittenberg |
| Elevation: | 75 |
| Area: | 6.83 |
| Population: | 123 |
| Stand: | 2009-12-31 |
| Postal Code: | 06918 |
| Area Code: | 035387 |
| Licence: | WB |
Zemnick is a village and a former municipality in Wittenberg district in Saxony-Anhalt, Germany. Since 1 January 2011, it is part of the town Zahna-Elster. It belonged to the administrative municipality (Verwaltungsgemeinschaft) of Elbaue-Fläming.
Zemnick is a round village and lies about 19 km northeast of Lutherstadt Wittenberg.
From 1815 to 1944, Zemnick was part of the Prussian Province of Saxony and from 1944 to 1945 of the Province of Halle-Merseburg.
After World War II, Zemnick was incorporated into the Province (since 1947, State) of Saxony-Anhalt from 1945 to 1952 and the Bezirk Cottbus of East Germany from 1952 to 1990. Since 1990, Zemnick has been part of Saxony-Anhalt, since 2011 as a part of Zahna-Elster.
In 1888, the church was built with an organ by Conrad Geissler.
Federal Highway (Bundesstraße) B 187 between Wittenberg and Jessen is about 5 km to the south.