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Cognomen Pasco (Pasco , Паско , باسكو) , all around the world, is a common surname. The cognomen Pasco is characteristic of Philippines, where it is quite a common surname, Bulgaria, where it is quite a rare surname, and Peru. Measured by absolute frequency, it is commonest in Philippines, France, and Peru. Much less frequently, Pasco is the forename as well as the last name.