Carnwath (Gaelic: A' Chathair Nuadh; English: ford of the cairn) is a moorland village on the southern edge of the Pentland Hills of Lanarkshire, Scotland. The village lies about 30 mi (48 km) south of both Edinburgh and Glasgow. It is bounded by the North Medwyn and South Medwyn watercourses.
Carnwath is a farming village set in rolling countryside, on the edge of open moorland and with views to the Pentland Hills. Its proximity to the A70 makes it popular with commuters to Edinburgh. Carnwath is a village with hanging baskets along the main street and considerable effort has gone into improving the local environment in recent years. Carnwath holds the oldest foot race in Scotland and probably Europe.