Sir Anthony Deane (c.1638–1721) was a 17th-century mayor of Harwich, naval architect, Master Shipwright and commercial shipbuilder, and Member of Parliament.
Deane was born in Harwich in around 1638, the eldest son of master mariner Anthony Deane. At an early age he was apprenticed to master shipwright Christopher Pett at Woolwich Dockyard, and was appointed as the Dockyard's assistant shipwright in 1660.
In August 1662 Deane met Samuel Pepys, the Clerk of the Acts and member of the Navy Board. Pepys was impressed with Deane's ability and saw in him a potential rival for Christopher Pett, against whom Pepys held a political grudge. On Pepys' recommendation the Navy Board reopened the derelict Harwich Dockyard in October 1664 and appointed Deane as its master shipwright, elevating him from being Pett's assistant to his nominal equal. For Deane, the promotion meant that he would have a free hand in designing and constructing naval vessels, albeit at a smaller dockyard than the great Navy establishments of Portsmouth, Plymouth or Deptford.
Deane was one of the earliest to apply scientific principles to the building of naval vessels, and between 1666 and 1675 he designed and built 25 vessels for the Royal Navy, including Rupert, Francis, Roebuck, Resolution, Swiftsure, and Harwich.
Harwich Dockyard was closed in 1668, following the end of the Second Anglo-Dutch War, and Deane was appointed Master Shipwright at Portsmouth Dockyard. In 1670 he became the first English shipwright to use iron as a substantial construction component in a Royal Navy vessel, with U-shaped iron bars to secure the planking of HMS Royal James relative to the internal beams within her hull. His patron Pepys strongly disapproved of this innovation and the matter was ultimately referred to the King, Charles II, who endorsed Deane's actions. However, the innovation was not repeated in other Royal Navy vessels until adoption of the 1719 Establishment nearly fifty years later.