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Family name Olavesen (Olavesen ) , across the world, is a rare last name. The surname Olavesen is characteristic of Norway, where it is quite a rare surname, Denmark, where it is a rare surname, and Australia, where it is a very rare surname. Measured by absolute frequency, the name is most common in Norway, the United States, and Australia. Much less frequently, Olavesen is the forename as well as the last name.