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Surname Kaisla (Kaisla ) , all around the world, is a rare cognomen. The cognomen Kaisla is habitual in Finland, where it is quite a rare surname, Estonia, where it is a rare surname, and Canada, where it is a very rare surname. Measured by absolute frequency, the name is most common in Finland, Estonia, and India. Very seldom, Kaisla is the forename as well as the last name.