The London Borough of Merton is a borough in south-west London, England. The borough was formed under the London Government Act 1963 in 1965 by the merger of the Municipal Borough of Mitcham, the Municipal Borough of Wimbledon and the Merton and Morden Urban District, all formerly inside Surrey. The borough derives its name from the historic parish of Merton, which was centred around the area now referred to as South Wimbledon. The local authority is Merton London Borough Council.
Merton covers a total area of approximately 14.52 square miles. Merton is served by a wide array of National Rail stations across the borough, plus the southern tip of the London Underground's Northern line and the District line around the Wimbledon branch. It is the only London Borough which has tube, rail and tram services.
The key commercial centres in Merton are Mitcham, Morden and Wimbledon, of which Wimbledon is the largest. Other smaller sized centres consist of Raynes Park, Colliers Wood, South Wimbledon, Wimbledon Park and Pollards Hill. Each year, Wimbledon, one of the four tennis Grand Slam tournaments, takes place at the All England Lawn Tennis and Croquet Club in Church Road Wimbledon. The event takes place over a fortnight at the end of June and start of July and it is the biggest annual sporting event to take place in the United Kingdom, attracting over 200000 visitors throughout the Wimbledon fortnight.