Beaconsfield is a market town and civil parish within the unitary authority of Buckinghamshire, England, 23.4 miles (38 km) WNW of central London and 16.0 miles (26 km) SSE of Aylesbury. Three towns are within five miles: Gerrards Cross, Amersham and High Wycombe.

The town is adjacent to the Chiltern Hills Area of Outstanding Natural Beauty and has a wide area of Georgian, neo-Georgian and Tudor revival high street architecture, known as the Old Town. It is known for the first model village in the world and the National Film and Television School.

Beaconsfield was the home for many French resistants who fled France in 1940 to join the General de Gaulle. There is a plate in their honour in the cemetery in old town.

Beaconsfield is the home of Bekonscot model village, which was the first model village in the world; and Beaconsfield Film Studios becoming the National Film and Television School, where many film directors (including Nick Park) and technicians have learned their craft. It is the birthplace of Terry Pratchett, author of the Discworld series of fantasy novels. Several scenes in Brief Encounter, a classic film about a woman in a dull middle class marriage who almost undertakes an affair, were filmed in the town: Station Parade served as Milford High Street and Boots on Burke's Parade was where Alec runs into Laura. The exterior of the Royal Saracens Head Inn can be seen in the James Bond film Thunderball, and the interior shots for the pub in Hot Fuzz were filmed in the Royal Standard pub. The New Town also features in two other postwar colour films, John & Julie and The Fast Lady. Many other parts of the town have been used in films due to the old film studio and nearby Pinewood Studios. More recently it has often been used as a "location" for the TV murder mystery series, Midsomer Murders and the Inspector Morse spinoff Lewis.

Beaconsfield is also home to the Chiltern Shakespeare Company, which annually holds amateur performances of Shakespeare plays, Beaconsfield Theatre Group (over 60 years old), Beaconsfield Musical & Operatic Society (over 100 years old) and to The Young Theatre (at Beaconsfield), a theatre company "run by young people for young people" and winners of the All British Festival of One Act Plays in 2004.