Buckinghamshire [ˈbʌkɪŋəmʃə] (Abkürzung Bucks) ist eine nach der Universitätsstadt Buckingham benannte traditionelle und zeremonielle Grafschaft, außerdem eine Unitary Authority im mittleren Südengland. Hauptort ist Aylesbury, etwa 60 Kilometer nordwestlich von London gelegen. Buckinghamshire war bis zum 1.
Buckinghamshire County Council was the upper-tier local authority for the administrative county and later the non-metropolitan county of Buckinghamshire, in England, the United Kingdom established in 1889 following the Local Government Act 1888. The county council's offices were in Aylesbury.
Buckinghamshire Council is a unitary local authority in England, the area of which constitutes most of the ceremonial county of Buckinghamshire. It was created in April 2020 from the areas that were previously administered by Buckinghamshire County Council including the districts of South Bucks, Chiltern, Wycombe and Aylesbury Vale; since 1997 Milton Keynes has been a separate unitary authority.