The Signing of Peace in the Hall of Mirrors, Versailles, 28 June 1919 is an oil-on-canvas painting by Irish artist William Orpen, completed in 1919. It was one of the paintings commissioned from Orpen to commemorate the Peace Conference at Versailles in 1919. The work is held by the Imperial War Museum in London.

Major Sir William Newenham Montague Orpen, was an Irish artist who mainly worked in London. Orpen was a fine draughtsman and a popular, commercially successful painter of portraits for the well-to-do in Edwardian society, though many of his most striking paintings are self-portraits.