Sir James Lucas Yeo KCB (7 October 1782 - 21 August 1818) was a British Naval commander who served in the War of 1812. He participated in several sea battles during the Napoleonic Wars, so successfully that he was made a post captain at the age of 25. In 1810, he was knighted for his services. In 1812, he commanded the frigate HMS Southampton, then stationed in the Bahamas. He captured the American brig USS Vixen. Sir James's use of his small navy was always determined and skilful, but he was hampered by a lack of cooperation from the British army. The commander of these forces, Sir George Prevost, failed to follow up key advances made by Sir James at Sackett's Harbour and elsewhere that might have resulted in major British victories.