Lee Castle, also known as The Lee, is a castellated mansion in Auchenglen, a branch of the Clyde Valley in South Lanarkshire, Scotland. It is located 1.5 kilometres (0.93 mi) south of Braidwood, and 4 kilometres (2.5 mi) north-west of Lanark. Lee was the seat of the Lockharts of Lee from its establishment in the 13th century until 1919, though the present house is the result of rebuilding in the 19th century.