Admiral Sir Richard Onslow, 1st Baronet was an English naval officer who played a distinguished role in the 1797 Battle of Camperdown.

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.