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Last name Ollo (Ollo , Олло ) , worldwide, is quite a rare family name. The cognomen Ollo is characteristic of Ivory Coast, where it is quite a rare surname, Estonia, and Cameroon, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Ivory Coast, the Democratic Republic of the Congo, and Indonesia. Likewise, Ollo is the forename as well as the last name.