| Dhu Loch (Loch Dhu) | |
| Location: | Bute, Scotland |
| Coords: | 55.8095°N -5.089°W |
| Type: | Reservoir |
| Pushpin Map: | Scotland Argyll and Bute |
| Basin Countries: | Scotland, United Kingdom |
| Area: | 115447m2 |
| Volume: | 455386m2 |
| Elevation: | 98m (322feet) |
Dhu Loch (also known as "Loch Dhu") is an impounding reservoir, located 1 kilometre directly west of the much larger Loch Fad and 5 kilometres south west of Rothesay. The loch is part of the water supply system for the town. The earthen dam is 8.1 metres high and was completed in 1905.