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Surname Угаи (Ugay , Ugai , Угаи ) , around the world, is quite a common cognomen. The cognomen Угаи is habitual in Philippines, where it is quite a rare surname, United Arab Emirates, where it is a rare surname, and Uzbekistan. In absolute terms, it most frequently occurs in Philippines, Indonesia, and Uzbekistan. Much less frequently, Угаи is the forename as well as the last name.