Menendo González (Portuguese and Galician: Mendo Gonçalves; died 6 October 1008) was a semi-autonomous Duke of Galicia and Count of Portugal (997–1008), a dominant figure in the Kingdom of León. He was the royal alférez, the king's armour-bearer (armiger regis) and commander of the royal armies, under Vermudo II (r. 984–999), and he continued to hold the position until his death. He became the tutor (1003) and ultimately father-in-law of Vermudo's successor, King Alfonso V. He maintained peaceful diplomatic relations with the Caliphate of Córdoba until 1004, after which there was a state of war.