Henry, 3rd Earl of Lancaster (c. 1281–1345) was a prominent English nobleman during the medieval period. He was the son of Henry, 2nd Earl of Lancaster and Maud Chaworth. Henry played a significant role in the political landscape of England, particularly during the reign of Edward II and Edward III. He was known for his military leadership and involvement in various campaigns. As a member of the Plantagenet family, Henry held considerable influence and land. He was also a key figure in the Lancastrian faction, which later became important in the Wars of the Roses. His legacy includes contributions to the development of the English nobility and governance.