Risga is an uninhabited island in between Càrna and Oronsay, in the centre of Loch Sunart, about from the north shore, in the council area of Highland, Scotland. Its area is and its highest elevation is . In 1950, over 50 pairs of Lesser black-backed gull were recorded. The island is included in the grounds of Glenborrodale Castle and is part of Sunart SSSI. Ross Rock is located about from Risga. Risga has at least 60 crotagans along the east coast, used for fishing. Risga is a rocky island.