| Koppies Dam | |
| Name Official: | Koppies Dam |
| Dam Crosses: | Renoster River |
| Res Name: | Koppies Dam Reservoir |
| Location: | Free State, South Africa |
| Operator: | Department of Water Affairs and Forestry |
| Dam Length: | 2 309 m |
| Dam Height: | 25 m |
| Dam Type: | gravity & arch |
| Res Capacity Total: | 42 311 000 m³ |
| Res Catchment: | 2 155 km2 |
| Res Surface: | 1 439 ha |
| Coordinates: | -27.2514°N 27.6681°W |
| Location Map: | South Africa#South Africa Free State |
Koppies Dam is a combined gravity and arch type dam located on the Renoster River, near Koppies, Free State, South Africa. The Koppies Dam Nature Reserve contains the dam. It was established in 1911 and its primary purpose is to serve for irrigation and domestic use. The hazard potential of the dam has been ranked high (3).