Clapham Junction is a major railway station near St John's Hill in south-west Battersea in the London Borough of Wandsworth, England, from and from .

The Clapham Junction rail crash occurred on the morning of 12 December 1988, when a crowded British Rail passenger train crashed into the rear of another train that had stopped at a signal just south of Clapham Junction railway station in London, England, and subsequently sideswiped an empty train travelling in the opposite direction.