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Last name Olaitan (Olaitan ) , in all the world, is a common surname. The last name Olaitan is habitual in 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, the name is most common in Sub-Saharan Africa, particularly Nigeria, Niger, and Ethiopia. Also, Olaitan is the forename as well as the last name.