St George Hanover Square was a civil parish in the metropolitan area of London, England.

In 1889 the parish became part of the County of London and the vestry was abolished in 1900, replaced by Westminster City Council.

Within the parish were some of the most fashionable areas of the West End of London, with an aristocratic population.

The parish included the part of Hyde Park northeast of the Serpentine and the Mayfair area.

To the south it narrowed, including the Belgravia area, Knightsbridge, Victoria Station and Pimlico.

[7] In 1855, the parish vestry became a local authority within the area of responsibility of the Metropolitan Board of Works.

So the incorporated vestry inherited these wards and assigned vestrymen to them: Dover (6), Conduit (9), Grosvenor (12), Brook (15), Curzon (12), Knightsbridge (27) and The Out (27).

This meant it did not form part of a union and the parish vestry remained in control of poor law functions, instead of a separately elected board of guardians as was typical.