| Castle Loch | |
|---|---|
 | |
  Castle Loch | |
| Location | Dumfries and Galloway, Scotland |
| Coordinates | 55°07′11″N 3°25′56″W / 55.1197899362°N 3.432154527°W |
| Type | freshwater loch |
| Primary inflows | several small burns |
| Primary outflows | Castle Loch burn |
| Basin countries | Scotland |
| Official name | Castle Loch, Lochmaben |
| Designated | 15 March 1996 |
| Reference no. | 796[1] |
Castle Loch is a shallow eutrophic loch covering an area of around 100 hectares in the town of Lochmaben in Dumfries and Galloway, Scotland. The ruined Lochmaben Castle lies at the southern end of the loch.