Joachim Christian, Count von Blumenthal (6 December 1720 in Quakenburg – 17 March 1800 in Berlin) succeeded his uncle Ludwig von Blumenthal as President of the Prussian General War and Finance Directory (effectively Minister War and Finance) of Prussia and remained so until the time of the Napoleonic Wars. His parents were Heinrich Albrecht von Blumenthal (1693–1767), Lord of Quackenburg, and Katharina von Lettow (1702–1743). His brothers Georg von Blumenthal und Werner (1725–1804) were both senior officers in the Prussian Army.