Lanark is a town in South Lanarkshire, Scotland, located 20 kilometres to the south-east of Hamilton. The town lies on the River Clyde, at its confluence with Mouse Water. In 2016, the town had a population of 9,050. Lanark was a royal burgh from 1140 to 1975, and was historically the county town of Lanarkshire, though in modern times this title belongs to Hamilton. Notable landmarks nearby include New Lanark, the Corra Linn and the site of Lanark Castle.