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Surname Olion (Olion ) , around the globe, is a rare last name. The surname Olion is habitual in the Democratic Republic of the Congo, where it is a rare surname, France, where it is a very rare surname, and Nicaragua. In absolute terms, the name is most common in the Democratic Republic of the Congo, Indonesia, and the United States. Much less frequently, Olion is the forename as well as the last name.