thumb|Sketch showing Conqueror at the Battle of Trafalgar, 21 October 1805
HMS Conqueror was a 74-gun third-rate ship of the line of the Royal Navy, launched on 23 November 1801 at Harwich. She was designed by Sir John Henslow as part of the middling class of 74s, and was the only ship built to her draught. Whereas the common class carried 28 18-pounder guns on their upper gun decks, the middling class carried 30, and only ten 9-pounder guns on their quarterdecks instead of the 12 of the common class.
thumb|Conqueror towing HMS [[HMS Africa (1781)|Africa off the shoals at Trafalgar, three days after the battle, painting by James Wilson Carmichael]]
On 2 February 1812, Conqueror was driven ashore on the coast of England between Sheerness and Chatham, Kent, during a storm.
Conqueror was broken up in 1822.