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Last name Ярв (Jarv , Ярв , Yarv ) , all around the world, is a rare cognomen. The last name Ярв is characteristic of Northern Europe, particularly Estonia, where it is quite a common surname, Finland, where it is a rare surname, and Latvia. Not in comparison with a country's population, the name is most common in Estonia, Finland, and Russia. Very seldom, Ярв is the forename as well as the last name.