| Location Map: | Scotland Highland |
| Caption: | Risga shown within Highland |
| Coordinates: | 56.6708°N -5.9017°W |
| Gridreference: | NM6105760026 |
| Area: | 12ha[1] |
| Highest Elevation: | 43m[2] |
| Population: | 0 |
| Island Group: | Inner Hebrides |
| Local Authority: | Highland |
Risga is an uninhabited[2] island in between Càrna and Oronsay, in the centre of Loch Sunart,[3] about 800yd from the north shore,[4] in the council area of Highland, Scotland. Its area is 12ha[1] and its highest elevation is 43m (141feet).[2] In 1950, over 50 pairs of Lesser black-backed gull were recorded.[5] The island is included in the grounds of Glenborrodale Castle[6] and is part of Sunart SSSI.[7] Ross Rock is located about 200yd from Risga.[8] Risga has at least 60 crotagans along the east coast, used for fishing.[9] Risga is a rocky island.[10]
The name "Risga" is Norse[11] and includes the Old Norse word for island.[12] In 1920–21 some Mesolithic materials were recovered during the excavation of a kitchen. They are now in the Hunterian Museum, University of Glasgow and Kelvingrove Art Gallery and Museum.[1] There is a shell midden, a scheduled monument that is at least 30by, which is visible as a grass-covered mound.[13] The shell heap is on top of a raised beach, similar to those at Oronsay.[14]