John de Vere, 13th Earl of Oxford, English commander and politician, Lord High Constable of England (b. 1443)
John de Vere, 13th Earl of Oxford (8 September 1442 – 10 March 1513), the second son of John de Vere, 12th Earl of Oxford, and Elizabeth Howard, a first cousin of John Howard, 1st Duke of Norfolk (2nd creation), was one of the principal Lancastrian commanders during the English Wars of the Roses.

He was the principal commander of King Henry VII's army at the Battle of Bosworth Field, and again led Henry's troops to victory at the Battle of Stoke Field two years later. He became one of the great men of the King's regime.