Ashdown House (also known as Ashdown Park) is a 17th-century country house in the civil parish of Ashbury in the English county of Oxfordshire. Until 1974 the house was in the county of Berkshire, and the nearby village of Lambourn remains in that county.
It is a Grade I listed building[1] and the grounds are included in the Register of Historic Parks and Gardens at Grade II*.[2]