Green Street is a street in Mayfair, London. It has been built up since the mid-18th century, but most of the current properties date from the late 19th and early 20th century. It has had a number of significant residents, including various members of the British aristocracy, the James Bond author Ian Fleming, and the Beatles.

Mayfair is an area in London, England and is located in the City of Westminster. It is in Central London and part of the West End. It is between Oxford Street, Regent Street, Piccadilly and Park Lane and one of the most expensive districts in the world.