| Nagle Dam | |
| Name Official: | Nagle Dam |
| Dam Crosses: | Mgeni River |
| Res Name: | Nagle Dam Reservoir |
| Location: | KwaZulu-Natal, South Africa |
| Operator: | Department of Water Affairs and Forestry |
| Dam Type: | Mass Concrete |
| Opening: | 1950 |
| Res Catchment: | 2545 km2 |
| Coordinates: | -29.5944°N 30.6417°W |
Nagle Dam is a mass concrete type dam located on the Mgeni River, near Cato Ridge, KwaZulu-Natal, South Africa. It was established in 1950 and serves mainly for municipal and industrial purposes. The hazard potential of the dam has been ranked high (3).