Cliveden (pronounced ) is an English country house and estate in the care of the National Trust in Buckinghamshire, on the border with Berkshire. The Italianate mansion, also known as Cliveden House, crowns an outlying ridge of the Chiltern Hills close to the South Bucks villages of Burnham and Taplow. The main house sits above the banks of the River Thames, and its grounds slope down to the river. Cliveden has become one of the National Trust's most popular pay-for-entry visitor attractions, hosting 524,807 visitors in 2019.