Surname Ogbuagu (Ogbuagu 
) , worldwide, is quite a rare family name. The surname Ogbuagu is habitual in Nigeria, where it is quite a rare surname, Niger, where it is a rare surname, and the United Kingdom, where it is a very rare surname. In absolute terms, it most frequently occurs in Nigeria, Niger, and the United States. Also, Ogbuagu is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ogbuagu | Niger, United Kingdom, United States, Nigeria, South Africa |
| stella chinyere ogbuagu Nigerian demographer and sociologist, NG (b. 1943) |
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| chukwuanugo ogbuagu researcher |
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