| Loch an Sgoltaire | |
| Pushpin Map: | Scotland Argyll and Bute |
| Location: | Colonsay, Scotland |
| Coords: | 56.0966°N -6.2033°W |
| Type: | reservoir |
| Basin Countries: | United Kingdom |
| Area: | 140700m2 |
| Elevation: | 60m (200feet) |
Loch an Sgoltaire is an impounding reservoir located on the Inner Hebridean island of Colonsay, Scotland. It is located at, northwest of Kiloran and is the main source of fresh water for the island. The concrete dam was constructed in 1982 and is 3.1 metres high.
On one of the islands in the loch is a ruined castle similar to Loch Gorm Castle, Islay.[1]