Lieutenant General Sir Manley Power, KCB, ComTE (1773 – 7 July 1826) was a British military leader who fought in a number of campaigns for Britain and rose to the rank of Lieutenant General. He is chiefly remembered for leading a brigade of Portuguese troops under The Duke of Wellington in the Iberian Peninsular War. He is also remembered for jointly causing the removal of Sir George Prevost, governor-in-chief of British North America, for Prevost's refusal to press the attack on Plattsburgh, New York, in 1814, during the War of 1812. After his active military service Sir Manley Power was appointed Lieutenant Governor of Malta.