| Conflict: | Battle of Bayona Islands (1590) |
| Partof: | the Eighty Years' War and the Anglo-Spanish War (1585–1604) |
| Date: | Early 1590 |
| Place: | Off Bayona Islands, Atlantic Ocean |
| Result: | Spanish victory[1] [2] |
| Combatant1: | United Provinces |
| Combatant2: |  Spain |
| Commander1: | Unknown |
| Commander2: | Pedro de Zubiaur |
| Strength1: | 14 ships |
| Strength2: | 3 flyboats |
| Casualties1: | 14 ships captured (7 ships boarded)[3] [4] (Flagship boarded and captured) |
| Casualties2: | Unknown |
The Battle of Bayona Islands, also known as the Battle of Bayona Bay, was a naval engagement that took place in early 1590, off Bayona Islands (present-day Cíes Islands), near Bayona (or Baiona) and Vigo, Spain, between a small Spanish naval force commanded by Captain Don Pedro de Zubiaur, and an Anglo-Dutch flotilla of 14 ships, during the Eighty Years' War, and in the context of the Anglo-Spanish War (1585–1604) and the French Wars of Religion.[2] [4] After several hours of hard combat, the Spanish naval force composed of three flyboats achieved a great success, and the Anglo-Dutch fleet was totally defeated.[4] The flagship of the Dutch was boarded and captured, including another six ships more.[4] Finally, the rest of the Dutch fleet was forced to surrender.[2] [5] Shortly after, Pedro de Zubiaur arriving at Ferrol, along with the captured ships, with great surprise for the Spanish authorities of the port.