Family name Onwuka (Onwuka 
) , all over the world, is a common last name. The surname Onwuka is habitual in Sub-Saharan Africa, particularly Nigeria, where it is quite a common surname, Togo, where it is quite a rare surname, and Niger. Measured by absolute frequency, the name is most common in Nigeria, Niger, and the United States. Also, Onwuka is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Onwuka | Niger, Togo, Ghana, Nigeria, United States |
| onwuka kalu Nigerian businessman, NG (b. 1954) |
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| anthony onwuka NG (b. 1951) |
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| amara onwuka Dutch television presenter and television meteorologist, NL (b. 1975) |
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| peter chidolue onwuka (b. 1966) |
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| mabel ifeoma onwuka soil chemist |
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| nkwo onwuka-binitie Nigeria fashion designer, NG |
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| justina ucheojor onwuka researcher (ORCID 0000-0002-4236-1758) |
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| onwuka njoku Lecturer, Writer |
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| chidiogo c onwuka researcher ORCID ID = 0000-0002-5654-4002 |
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| jude chinedu onwuka researcher |
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| akachukwu marytheresa onwuka researcher |
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| onwuka ugochukwu richard comedian, NG |
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