Augustus Keppel, 1st Viscount Keppel, English admiral and politician (d. 1786)
Admiral Augustus Keppel, 1st Viscount Keppel, PC (25 April 1725 – 2 October 1786) was a Royal Navy officer and politician who sat in the House of Commons from 1755 to 1782. He saw action in command of various ships, including the fourth-rate Maidstone, during the War of the Austrian Succession. He went on to serve as Commodore on the North American Station and then Commander-in-Chief, Jamaica Station during the Seven Years' War. After that he served as Senior Naval Lord and then Commander-in-Chief of the Channel Fleet.

During the American Revolutionary War Keppel came into a notorious dispute with Sir Hugh Palliser over Palliser's conduct as his second-in-command at the inconclusive Battle of Ushant in July 1778; the dispute led to Keppel being court-martialled, although he was subsequently acquitted. During the final years of the American Revolutionary War Keppel served as First Lord of the Admiralty.