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Cognomen کیهانی (Keyhani
, کیهانی
) , worldwide, is a rare family name. The cognomen کیهانی is characteristic of Iran, where it is a rare surname, Sweden, and Australia, where it is a very rare surname. In absolute terms, it is commonest in Iran, the United States, and Indonesia. Much less frequently, کیهانی is the forename as well as the last name.