Agnes Mortimer, Countess of Pembroke

Agnes Mortimer, Countess of Pembroke (1317–25 July 1368), was a daughter of Roger Mortimer, 1st Earl of March, and Joan de Geneville. In 1328 or 1329 she married Laurence Hastings, the future Earl of Pembroke and her father's ward.

Her only surviving son, the 2nd Earl of Pembroke, was born in August 1347, and Laurence died the next year. Agnes then married John de Hakelut. She died in July 1368 and was buried at the Minoresses convent outside Aldgate in London.