The Battle of Ushant took place on 27 July 1778, and was fought during the American Revolutionary War between French and British fleets 100 miles (160 km) west of Ushant, an island at the mouth of the English Channel off the westernmost point of France. "Ushant" is the anglicised pronunciation of "Ouessant".

Admiral Sir Hugh Palliser, 1st Baronet was a Royal Navy officer. As captain of the 58-gun HMS Eagle he engaged and defeated the French 50-gun Duc d'Aquitain off Ushant in May 1757 during the Seven Years' War. He went on to serve as Commodore Governor of Newfoundland, then Controller of the Navy and then First Naval Lord. During the American Revolutionary War he came into a famous dispute with Augustus Keppel over his conduct as third-in-command of the Channel Fleet at the inconclusive Battle of Ushant in July 1778; the dispute led to Palliser being court-martialled, although he was subsequently acquitted. In retirement Palliser became Governor of Greenwich Hospital.