Diego López V de Haro, nicknamed el Intruso, was a Castilian noble of the House of Haro and held the title of the Lord of Biscay which he took from the pretender to the title, John of Castile.
- Occupation
- aristocrat, military personnel
- Position held
- Mayordomo mayor of the King of Castile, Ensign of the Royal Banner of Castile, adelantado mayor of Castile, Adelantado mayor de la frontera de Andalucía
- Citizenship
- Crown of Castile
- Born
- 1250
- Died
- January 1310