The Coffin Stone, also known as the Coffin and the Table Stone, is a large sarsen stone at the foot of Blue Bell Hill near Aylesford in the south-eastern English county of Kent. Now lying horizontally, the stone probably once stood upright nearby.
Various archaeologists have argued that the stone was part of a now-destroyed chambered long barrow constructed in the fourth millennium BCE, during Britain's Early Neolithic period. If a chambered long barrow did indeed previously exist on the site, it would have been built by pastoralist communities shortly after the introduction of agriculture to Britain from continental Europe.