John Lockhart-Ross

Sir John Lockhart-Ross, 6th Baronet
Lockhart-Ross, c. 1760
Born11 November 1721
Lockhart Hall, Lanarkshire
Died9 June 1790 (1790-06-10) (aged 68)
Balnagown Castle, Ross-shire
AllegianceGreat Britain
Service / branchRoyal Navy
Years of service1735–1790
RankVice-Admiral
CommandsHMS Vulcan
HMS Kent
HMS Savage
HMS Tartar
HMS Chatham
HMS Royal George
HMS Bedford
HMS Shrewsbury
Battles / wars
RelationsWilliam Ross, 12th Lord Ross (grandfather)

Vice-Admiral Sir John Lockhart-Ross, 6th Baronet (11 November 1721 – 9 June 1790), known as John Lockhart from 1721 to 1760, was an officer of the Royal Navy who saw service during the War of the Austrian Succession, Seven Years' War, and the American War of Independence, and served for a time as a Member of Parliament.

Lockhart was born into a gentry family in 1721 and embarked on a naval career. He served on a number of ships during the War of the Austrian Succession, seeing action at both the First and Second Battles of Cape Finisterre, having by then risen to the rank of lieutenant. He had his own commands by the outbreak of the Seven Years' War, and enjoyed particular success as a frigate captain, cruising against privateers while in command of HMS Tartar. Further commands followed, including roles in detached squadrons at the Battle of Quiberon Bay. Taking the additional name Ross after he inherited a deceased relative's estates, he served as a member of parliament and undertook land reforms and improvements during the years of peace before the outbreak of the American War of Independence.

Lockhart-Ross returned to sea on the outbreak of war, commanding a ship at the Battle of Ushant, and later being promoted to flag rank. He served in several actions as a junior commander of Rodney's fleet, including the capture of the Caracas convoy, the Battle of Cape St. Vincent and the relief of Gibraltar. He then retired ashore, devoting himself to his estates until his death in 1790. He was succeeded in the baronetcy he had inherited in 1778 by his son.