The Giant's Dance or Giants' Dance is a stone circle in an Arthurian legend first documented in , by Geoffrey of Monmouth in 1136.
Geoffrey of Monmouth describes it as a megalithic stone circle, whose stones were used to build the Neolithic Stonehenge on Salisbury Plain in Wiltshire, England.
According to Geoffrey, the wizard Merlin disassembled a circle at Mount Killaraus in Ireland and had men drag the stones to Wiltshire, and had giants assemble Stonehenge.
In modern use Giant's Dance has been used to refer to: