| Aughrusbeg Lough | |
| Pushpin Map: | Island of Ireland |
| Pushpin Map Alt: | Aughrusbeg Lough location in Ireland |
| Pushpin Label Position: | none |
| Pushpin Map Caption: | Location in Ireland |
| Location: | County Galway |
| Catchment: | 1.69km2 |
| Basin Countries: | Ireland |
| Length: | 1.4km (00.9miles) |
| Width: | 0.6km (00.4miles) |
| Area: | 0.5km2 |
| Max-Depth: | 14m (46feet) |
| Elevation: | 8m (26feet) |
Aughrusbeg Lough is a freshwater lake in the west of Ireland. It is located in the Connemara area in west County Galway.
Aughrusbeg Lough lies about 15km (09miles) northwest of Clifden near the village of Cleggan. The lake is oligotrophic.
Fish species in Aughrusbeg Lough include three-spined stickleback, rudd, brown trout and the critically endangered European eel. The lake is part of the Aughrusbeg Machair and Lake Special Area of Conservation.