Loch Sunart (Scottish Gaelic ) is a sea loch on the west coast of Scotland. Loch Sunart is bounded to the north by the Sunart district of Ardnamurchan and to the south by the Morvern district. At it is the longest sea loch in the Highland local government area. The maximum depth of the loch is 124 metres east of Càrna near the entrance to Loch Teacuis. Other islands in the loch include Oronsay, seaward of Càrna, Risga, which lies between the two larger islands, and Eilean Mòr, which lies towards the landward end of the loch in line with Beinn Resipol.