The Aylesbury Vale is a geographical region in Buckinghamshire, England, which is bounded by the City of Milton Keynes and West Northamptonshire to the north, Central Bedfordshire and the Borough of Dacorum (Hertfordshire) to the east, the Chiltern Hills to the south and South Oxfordshire to the west. It is named after Aylesbury, the county town of Buckinghamshire. Winslow and Buckingham are among the larger towns in the vale.

Buckinghamshire is a ceremonial county in South East England and one of the home counties. It is bordered by Northamptonshire to the north, Bedfordshire to the north-east, Hertfordshire to the east, Greater London to the south-east, Berkshire to the south, and Oxfordshire to the west. The largest settlement is the city of Milton Keynes, and the county town is Aylesbury.