HMS London was a 90-gun second-rate ship of the line of the Royal Navy, launched on 24 May 1766 at Chatham Dockyard.

[1] London was originally launched as a 90-gun ship, as was standard for second rates at the time, but was later increased to 98 guns when she had eight 12-pounders installed on her quarterdeck.

Pierced for 20 guns, she carried eighteen 9-pounders, and she and her crew of 161 men were under the command of Citizen Dupan.

[5] She was present at the Battle of Copenhagen in 1801, as part of Sir Hyde Parker's reserve fleet.

At the action of 13 March 1806, London captured the French ship of the line Marengo.