West London refers to the western part of London, England, bordered by Surrey to the west, south west, and south; Berkshire to the west and north west; Buckinghamshire to the north west; and Hertfordshire to the north. A publication by the Mayor of London in 2011 referred to the London boroughs of Brent, Harrow, Ealing, Hammersmith and Fulham, Hounslow, Richmond, and Hillingdon as West London. Although commonly considered to be part of Central London, sometimes Westminster and all areas westwards are referred to as West London.

The development of the area began with the establishment of the Abbey on a site then called Thorney Island, the choice of site may in part relate to the natural ford which is thought to have carried Watling Street over the Thames in the vicinity.