Admiral Adam Duncan, 1st Viscount Duncan, KB was a British admiral who defeated the Dutch fleet off Camperdown on 11 October 1797. This victory is considered one of the most significant actions in naval history.

The Battle of Camperdown was a major naval action fought on 11 October 1797, between the British North Sea Fleet under Admiral Adam Duncan and a Batavian Navy (Dutch) fleet under Vice-Admiral Jan de Winter. The battle, the most significant action between British and Dutch forces during the French Revolutionary Wars, resulted in a complete victory for the British, who captured eleven Dutch ships without losing any of their own.