The Aemilia was the flagship of Admiral Maarten Tromp during part of the Eighty Years' War. It was a Dutch 57-gun ship of the line. Built by Jan Salomonszoon van den Tempel for the Admiralty of Rotterdam in 1632, the ship was the largest Dutch warship built up to that time. At the Battle of the Downs, in 1639, the vessel fought well under the personal command of Admiral Tromp. It was last mentioned in 1647.