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Cognomen Iyer (Iyer
, Айер
) , worldwide, is a common last name. The cognomen Iyer is habitual in Western Asia, particularly United Arab Emirates, where it is quite a common surname, Qatar, and Bahrain. In absolute terms, it is the most numerous in India, the United States, and United Arab Emirates. Very seldom, Iyer is the forename as well as the last name.