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Family name Tanko (Tanko , Tank , Танко ) , all over the world, is a widespread surname. The family name Tanko is habitual in Nigeria, where it is quite a common surname, Slovenia, and Ghana (explore the name in all countries). Not in comparison with a country's population, it is the most numerous in Nigeria, India, and Ghana. Likewise, Tanko is the forename as well as the last name.