| Selset Reservoir | |
| Pushpin Map: | County Durham |
| Location: | County Durham, England |
| Coords: | 54.585°N -2.135°W |
| Type: | Reservoir |
| Inflow: | River Lune |
| Outflow: | River Lune |
| Agency: | Northumbrian Water |
| Elevation: | 310m (1,020feet) |
Selset Reservoir is a reservoir in County Durham, England. It is situated in Lunedale which is a side valley of the River Tees, about 5miles west of Middleton-in-Teesdale. It supplies water for Teesdale and is owned by Northumbrian Water. It was built in 1960 and its main use (apart from water supply) is sailing.