Overtoun House is a 19th-century country house and estate in West Dunbartonshire, Scotland. Situated on a hill overlooking the River Clyde, it is two kilometres (1.2 mi) north of the village of Milton and three kilometres (1.9 mi) east of the town of Dumbarton. The house, an example of Scottish Baronial architecture, was built in the 1860s, and was donated to the people of Dumbarton in 1938.