Government Offices Great George Street (GOGGS) is a large UK government office building situated in Westminster between Horse Guards Road, Great George Street, Parliament Street, King Charles Street and Parliament Square. The western end of the building, on Horse Guards Road, is known as 1 Horse Guards Road (1HGR). The Parliament Street end is referred to as 100 Parliament Street (100PS).

Great George Street is a street in Westminster, London, leading from Parliament Square to Birdcage Walk. The area of the current street was occupied by a number of small roads and yards housing inns and tenements. In the 1750s these were demolished and Great George Street laid out with "houses only as are fit for the habitation of persons of fortune and distinction". Part of the street was demolished in 1806 and is now part of Parliament Square. Between 1898 and 1915 the entire north side of the street was demolished for the construction of the Government Offices Great George Street. The street houses the headquarters of the Royal Institution of Chartered Surveyors, whose building includes the only surviving 1750s façade, and the Institution of Civil Engineers. The street formerly housed the National Portrait Gallery.