South Lancs/Cheshire 4 was a regional English rugby union league at the ninth tier of national competition for teams from the South Lancashire, Cheshire and Manchester area. Teams were promoted to South Lancs/Cheshire 3 and generally there was no relegation - although there was up until 2002 when South Lancs/Cheshire 5 was still active. Despite retaining healthy numbers of teams South Lancs/Cheshire 4 was abolished by the end of the 2008-09 season with most teams moving automatically up into South Lancs/Cheshire 3.