John Hastings, 2nd Earl of Pembroke, KG (29 August 1347 – 16 April 1375), was a fourteenth-century English nobleman and soldier. He also held the title Baron Abergavenny. He was born in Sutton Valence, the son of Laurence Hastings, 1st Earl of Pembroke, and Agnes Mortimer. His father died when John Hastings was only a year old, and he became a ward of King Edward III whilst remaining in his mother's care. The King arranged for John to marry Edward's daughter Margaret in 1359, which drew John into the royal family. However, Margaret died two years later. John Hastings inherited his father's earldom, subsidiary titles and estates in 1368. The same year he made a second marriage, to Anne, daughter of Walter, Lord Mauny. The following year Pembroke commenced the career in royal service that was to consume the rest of his life. The Hundred Years' War had recently reignited in France, and in 1369 Pembroke journeyed to Aquitaine.