Battle of Lagos: Naval battle during the Seven Years' War between Great Britain and France.

The Battle of Lagos took place between a British fleet commanded by Edward Boscawen and a French fleet under Jean-François de La Clue-Sabran over two days in 1759 during the Seven Years' War. They fought south west of the Gulf of Cádiz on 18 August and to the east of the small Portuguese port of Lagos, after which the battle is named, on 19 August.

The Seven Years' War, 1756 to 1763, was a Great Power conflict fought primarily in Europe, with significant subsidiary campaigns in North America and South Asia. The warring states were Great Britain and Prussia fighting against France and Austria, the respective coalitions receiving assistance from countries including Portugal, Spain, Saxony, Sweden, and Russia. Related conflicts include the Third Silesian War, French and Indian War, Third Carnatic War, Anglo-Spanish War (1762–1763), and Spanish–Portuguese War.