Lope Díaz de Haro was a Spanish noble of the House of Haro, the traditional Lords of Biscay. He was the firstborn son of Diego Lopez V de Haro, Lord of Biscay. Whilst he did not inherit his father's title of Lordship over Biscay, he is best known for being the lord of Orduña-Urduña and of Balmaseda. He further served as Alférez to King Ferdinand IV of Castile.
- Occupation
- aristocrat, military personnel
- Position held
- Ensign of the Royal Banner of Castile
- Citizenship
- Crown of Castile
- Born
- 1300
- Died
