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In the world, יאקו (Jaakko , יאקו ) is quite a rare male forename. The given name יאקו is characteristic of Northern Europe, particularly Aland Islands, where it is quite a common boy's name, Finland, and Sweden, where it is a rare male name. In absolute terms, it most frequently occurs in Finland, Sweden, and Germany. Much less frequently, יאקו is the last name as well as the forename.