Lowndes Square is a residential garden square at the north-west end of Belgravia, London, SW1. It is formed of archetypal grand terraces of light stucco houses, cream or white. The length of the central rectangular garden is parallel with Sloane Street to the west; visible from the north-west corner is a corner of the Harvey Nichols store, beyond which is Knightsbridge tube station. Ecclesiastically, it remains in a northern projection of one of the parishes of Chelsea, save its east side, in the very small parish of St Paul, Knightsbridge, a division which is mirrored secularly by the boundaries of two London Boroughs.

Belgravia is a district in Central London, covering parts of the areas of the City of Westminster and the Royal Borough of Kensington and Chelsea.