Broadcasting House is the headquarters of the BBC, in Portland Place and Langham Place, London. The first radio broadcast from the building was made on 15 March 1932, and the building was officially opened two months later, on 15 May. The main building is in Art Deco style, with a facing of Portland stone over a steel frame. It is a Grade II* listed building and includes the BBC Radio Theatre, where music and speech programmes are recorded in front of a studio audience.

As part of a major consolidation of the BBC's property portfolio in London, Broadcasting House has been extensively renovated and extended. This involved the demolition of post-war extensions on the eastern side of the building, replaced by a new wing completed in 2005. The wing was named the "John Peel Wing" in 2012, after the disc jockey. BBC London, BBC Arabic Television and BBC Persian Television are housed in the new wing, which also contains the reception area for BBC Radio 1 and BBC Radio 1Xtra (the studios themselves are in the new extension to the main building). In February 2024, BBC Radio 2 and BBC Radio 6 Music moved their operations into the Peel Wing, opposite the BBC Radio 1 studios on the eighth floor; this was facilitated by converting office space within the building, after the BBC decided to move the radio stations out of Wogan House.

The main building was refurbished, and an extension built to the rear. The radio stations BBC Radio 3, BBC Radio 4, BBC Radio 4 Extra and the BBC World Service transferred to refurbished studios within the building. The extension links the old building with the John Peel Wing, and includes a new combined newsroom for BBC News, with studios for the BBC News channel, BBC World News and other news programming. The move of news operations from BBC Television Centre was completed in March 2013.

The official name of the building is "Broadcasting House" but the BBC, until 2024, used the term "new Broadcasting House" (with a lowercase 'n') in its publicity referring to the new extension rather than the whole building, with the original building known as "old Broadcasting House".

Construction of Broadcasting House began in 1928, with programmes gradually transferring to the building. On 15 March 1932, the first musical programme was given by the bandleader Henry Hall and the BBC Dance Orchestra. Hall also wrote and performed, with his dance band, Radio Times, the name of the BBC's schedule publication.

The first news bulletin was read by Stuart Hibberd on 18 March. The last transmission from Savoy Hill was on 14 May, and Broadcasting House officially opened on 15 May 1932. George Val Myer designed the building in collaboration with the BBC's civil engineer, M. T. Tudsbery. The interiors were the work of Raymond McGrath, an Australian-Irish architect. He directed a team that included Serge Chermayeff and Wells Coates and designed the vaudeville studio, the associated green and dressing rooms, and the dance and chamber music studios in a flowing Art Deco style.

The building is built in two parts. Dispensing with the oft-found central light-well of contemporary buildings this size, the central core containing the recording studios was a windowless structure built of brick. (Structural brick rather than steel framing was used in order to reduce noise transmission both from without and between studios.) The surrounding outer portion, designed for offices and ancillary spaces, is steel-framed and faced with Portland stone. While the outer portion had plenty of windows, the inner core required special sound-dampened ventilation systems.

There were two areas where right of ancient lights would cause height restrictions. While the rights on the southern side ceased to be a problem after the owners of those rights gave concessions, the rights on the eastern side were dealt with by sloping the roof away from the street from the fourth floor up. This not only affected the floor plan of the structure, but meant that the interior recording tower could not be built to the top floor. (Thus, one studio on the top floor was actually outside the central studio core structure.)