Clachtoll (Scottish Gaelic: Clach Toll) is a coastal fishing and crofting village situated on the , in the ancient parish of Assynt, Sutherland county, in the Highland Council area on the north western edge of Scotland. It is in the postal district of Lairg, a larger village about fifty miles (80 km) inland. Its name derives from Gaelic, and refers to the very large broken rock, the remains of a natural arch (Gaelic: "clach" is "rock" and "toll" means "hole", "cavity", etc.) on the headland nearby.