HMS Monmouth was a 64-gun third rate ship of the line of the Royal Navy, launched on 23 April 1796 at Rotherhithe. She had been designed and laid down for the East India Company, but the Navy purchased her after the start of the French Revolutionary War. She served at the Battle of Camperdown and during the Napoleonic Wars. Hulked in 1815, she was broken up in 1834.

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.