| Lough Gill | |
| Pushpin Map: | Island of Ireland |
| Pushpin Map Alt: | Lough Gill location in Ireland |
| Pushpin Label Position: | none |
| Pushpin Map Caption: | Location in Ireland |
| Location: | County Kerry |
| Catchment: | 16.43km2 |
| Basin Countries: | Ireland |
| Length: | 2.2km (01.4miles) |
| Width: | 0.9km (00.6miles) |
| Area: | 1.4km2 |
| Depth: | 0.5m (01.6feet) |
| Elevation: | 3m (10feet) |
Lough Gill (;) is a freshwater lake in the southwest of Ireland. It is located on the Dingle Peninsula in County Kerry.
Lough Gill measures about 2km (01miles) long and 1km (01miles) wide. It is about 30km (20miles) west of Tralee, near the village of Castlegregory.
Lough Gill is considered a natural lagoon, draining into Tralee Bay. It is fed by the Killiney River and another unnamed stream. The lake is shallow, with depths of less than 0.5m (01.6feet).
Fish species in Lough Gill include three-spined stickleback, sand goby, brown trout, flounder and the critically endangered European eel. The lake is part of the Tralee Bay and Magharees Peninsula, West to Cloghane Special Area of Conservation.