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Surname Oluwaseyi (Oluwaseyi ) , throughout the world, is a common family name. The cognomen Oluwaseyi is characteristic of Nigeria, where it is quite a common surname, Niger, where it is quite a rare surname, and Iceland. Not in comparison with a country's population, it is commonest in Nigeria, Niger, and United Arab Emirates. Also, Oluwaseyi is the forename as well as the last name.