HMS San Nicolas (1797)

San Nicolás was an 80-gun third-rate ship of the line of the Spanish Navy.

She was present at the Battle of Cape St Vincent on 14 February 1797, when she was boarded by a number of British sailors from HMS Captain (1787) led by Horatio Nelson. They successfully took the ship, then crossed from her decks to board HMS San Josef, which had come to the aid of San Nicolás, but had become encumbered with her. Nelson and his men then captured San Josef as well.

Admiral Sir John Jervis put Commander Peter Puget, in HMS Raven (1796) in charge of San Nicolas, still crewed by Spaniards. Puget suppressed a mutiny and delivered the crew to Lisbon.

San Nicolás was commissioned into the Royal Navy as HMS San Nicolas. She became a prison ship in 1800, and was sold for breaking up on 3 November 1814.