Baltasar de Zúñiga y Velasco was a Spanish royal favourite of Philip III, his son Philip IV and a key minister in two Spanish governments. In control of foreign policy from 1618 to 1622, he was responsible for Spain's initially successful entry into the Thirty Years War (1618–1648) and for the appointment of his nephew, the Count-Duke of Olivares to the position of prime minister for much of the reign of Philip IV. De Zúñiga was also notable as being one of the very few Spanish royal favourites of the period to die whilst still in favour.
- Occupation
- diplomat, politician
- Position held
- ambassador of Spain to France, Spanish envoy to the Holy Roman Empire, Gentilhombre de boca, Sumiller de Corps
- Citizenship
- Spain
