Allegory of Waterloo, also known as Triumph of the Duke of Wellington or the Triumph of Great Britain after the Battle of Waterloo, was a monumental painting by British artist James Ward, completed in 1821, and now lost. Ward won a competition organised by the British Institution in 1816 to create an artwork to celebrate the final victory over Napoleon at the Battle of Waterloo the previous year. He was commissioned to create a full-size painting, and paid 1,000 guineas.