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Surname Ousseini (Ousseini ) , in the entire world, is quite a rare cognomen. The surname Ousseini is characteristic of Niger, where it is quite a common surname, Cameroon, where it is quite a rare surname, and Libya. Not in comparison with a country's population, this name is the most popular in Sub-Saharan Africa, particularly Niger, Cameroon, and Burkina Faso. Also, Ousseini is the forename as well as the last name.