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Surname Okam (Okam ) , across the world, is quite a rare family name. The surname Okam is habitual in Nigeria, where it is quite a rare surname, Cameroon, where it is a rare surname, and Lithuania. Not in comparison with a country's population, it is the most numerous in Nigeria, the Democratic Republic of the Congo, and Turkey. Likewise, Okam is the forename as well as the last name.