Elizabeth Lyon, Countess of Strathmore and Kinghorne (née Stanhope, May 1663 – 24 April 1723), was an English noblewoman and the wife of Scottish peer John Lyon, 4th Earl of Strathmore and Kinghorne. Born to Lady Elizabeth Butler and Philip Stanhope, 2nd Earl of Chesterfield, her paternity was in doubt. It is possible that her actual father was James, Duke of York, who would in 1685 ascend the throne as King James II of England.