Thomas Moore Manby (1 January 1769 – 13 June 1834) was a British naval officer who fought in the French Revolutionary Wars and Napoleonic Wars and later rose to the rank of rear admiral. He sailed with George Vancouver on his voyages of exploration, captained Bordelais, Africaine and Thalia, and was the chief suspect in the "delicate investigation" into the morals of Caroline, Princess of Wales.