Wimbledon, neighbourhood in Merton, an outer borough of London. Located about 8 miles (13 km) southwest of the City of London, it is the site of the annual All-England Championships, better known as the Wimbledon Championships, in lawn tennis. The district also includes Wimbledon Stadium, which is a venue for racing events; Wimbledon Theatre (1910); and Wimbledon Common, an open parkland.