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Surname Callan (Callan
, Ó
, カラン
) , all around the world, is a common last name. The last name Callan is habitual in Ireland, where it is quite a common surname, Peru, where it is quite a rare surname, and the United Kingdom. Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Peru. Very seldom, Callan is the forename as well as the last name.