| Lough Golagh | |
| Pushpin Map: | Island of Ireland |
| Pushpin Map Alt: | Lough Golagh location in Ireland |
| Pushpin Label Position: | none |
| Pushpin Map Caption: | Location in Ireland |
| Location: | County Donegal |
| Catchment: | 4.59km2 |
| Basin Countries: | Ireland |
| Length: | 1.5km (00.9miles) |
| Width: | 0.9km (00.6miles) |
| Area: | 0.6km2 |
| Elevation: | 101m (331feet) |
Lough Golagh is a freshwater lake in the northwest of Ireland. It is located in south County Donegal.
Lough Golagh is located about 10km (10miles) northeast of Ballyshannon. It measures about 1.5km (00.9miles) long west–east and 1km (01miles) wide.
Lough Golagh forms part of the Lough Golagh and Breesy Hill Special Area of Conservation. An island in the lake supports important bird species including common tern and black-headed gull.