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Family name Tharp (夏普 , Tharp ) , around the world, is a common cognomen. The last name Tharp is habitual in the United States, where it is quite a rare surname, Canada, where it is a rare surname, and New Zealand. Not in comparison with a country's population, it most frequently occurs in the United States, Canada, and the United Kingdom. Much less frequently, Tharp is the forename as well as the last name.