| Hornburg | |
| Type: | Ortsteil |
| Municipality: | Seegebiet Mansfelder Land |
| Coordinates: | 51.4533°N 11.5897°W |
| State: | Sachsen-Anhalt |
| District: | Mansfeld-Südharz |
| Elevation: | 206 |
| Area: | 11.35 |
| Population: | 384 |
| Stand: | 2006-12-31 |
| Postal Code: | 06295 |
| Area Code: | 034776 |
| Licence: | MSH |
Hornburg is a village and a former municipality in the Mansfeld-Südharz district, Saxony-Anhalt, Germany. Since 1 January 2010, it is part of the municipality Seegebiet Mansfelder Land.