Family name Хаию (Haiju 
, Хаию 
, Khaiyu ) , in all the world, is a rare cognomen. The family name Хаию is characteristic of Nepal, where it is a rare surname, Finland, and Ethiopia, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Nepal, Ethiopia, and Japan. More frequently, Хаию is the forename as well as the last name.