HMS Agamemnon was a 64-gun third-rate ship of the line of the British Royal Navy. She saw service in the American Revolutionary War, French Revolutionary, and Napoleonic Wars and fought in many major naval battles. She is remembered as Horatio Nelson's favourite ship, and she was named after the mythical ancient Greek king Agamemnon, the first ship of the Royal Navy to bear the name.
Duckworth's Action off San Domingo, 6 February 1806 by Nicholas Pocock. HMS Agamemnon is visible in the background, third from left.