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Cognomen Tihai (Tihai , Тихай ) , throughout the world, is a rare family name. The cognomen Tihai is characteristic of Nepal, where it is a rare surname, Ukraine, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Nepal, Ukraine, and Russia. Likewise, Tihai is the forename as well as the last name.