HMS Swiftsure was a 74-gun third rate ship of the line of the British Royal Navy. She spent most of her career serving with the British, except for a brief period when she was captured by the French during the Napoleonic Wars in the Action of 24 June 1801. She fought in several of the most famous engagements of the French Revolutionary and Napoleonic Wars, fighting for the British at the Battle of the Nile, and the French at the Battle of Trafalgar.