| Type: | Ortsteil |
| Town: | An der Poststraße |
| Coordinates: | 51.1667°N 48°W |
| State: | Sachsen-Anhalt |
| District: | Burgenlandkreis |
| Elevation: | 196 |
| Area: | 19.90 |
| Population: | 783 |
| Stand: | 2006-12-31 |
| Postal Code: | 06647 |
| Area Code: | 034463, 034465, 034467 |
Klosterhäseler is a village and a former municipality in the Burgenlandkreis district, in Saxony-Anhalt, Germany. Since 1 July 2009, it is part of the municipality An der Poststraße.