Gilbert de Clare, 4th Earl of Hertford (c. 1291–1342), was a prominent English nobleman during the medieval period. He was the son of Gilbert de Clare, 3rd Earl of Hertford and Joan of Acre, the daughter of King Edward I. Gilbert inherited his title and vast estates, becoming a significant figure in the political landscape of England. Throughout his life, Gilbert was involved in various military campaigns and served as a loyal supporter of the English crown. He played a role in the Hundred Years' War and was known for his participation in the Battle of Crécy in 1346. His legacy continued through his descendants, who maintained influence in English nobility.