John Jervis, 1st Earl of St Vincent (January 9, 1735 – March 14, 1823) was an admiral in the Royal Navy and Member of Parliament in the United Kingdom. Jervis served throughout the latter half of the 18th century and into the 19th, and was an active commander during the Seven Years' War, American War of Independence, French Revolutionary War and the Napoleonic Wars. He is best known for his victory at the 1797 Battle of Cape Saint Vincent, from which he earned his titles, and as a patron of Horatio Nelson. Jervis was also recognised by both political and military contemporaries as a fine administrator and naval reformer.