Fitzroy Square is a Georgian square in London, England. It is the only one in the central London area known as Fitzrovia. The square is one of the area's main features, this once led to the surrounding district to be known as Fitzroy Square or Fitzroy Town and latterly as Fitzrovia, though the nearby Fitzroy Tavern is thought to have had as much influence on the name as Fitzroy Square.

A blue plaque is a permanent sign installed in a public place in the United Kingdom, and certain other countries and territories, to commemorate a link between that location and a famous person, event, or former building on the site, serving as a historical marker. The term is used in the United Kingdom in two senses. It may be used narrowly and specifically to refer to the "official" scheme administered by English Heritage, and restricted to sites within Greater London; or it may be used less formally to encompass a number of similar schemes administered by organisations throughout the UK. The plaques erected are made in a variety of designs, shapes, materials and colours: some are blue, others are not. However, the term "blue plaque" is often used informally to encompass all such schemes.