Surname Nwadike (Nwadike 
) , across the world, is a common cognomen. The family name Nwadike is characteristic of Nigeria, where it is quite a rare surname, Niger, where it is a rare surname, and United Arab Emirates. In absolute terms, it is commonest in Nigeria, the United States, and Niger. Also, Nwadike is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Nwadike | Niger, Nigeria, United States, United Kingdom, South Africa |
| cletus nelson nwadike Swedish writer (b. 1966) |
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| rita nwadike association football player, NG (b. 1974) |
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| emeka nwadike English footballer (born 1978), GB (b. 1978) |
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| ken e. nwadike jr American documentary filmmaker, motivational speaker, and peace activist, US (b. 1981) |
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| collete nwadike Nigerian model, NG (b. 1991) |
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| patrick nwadike Swedish football defender, SE (b. 1998) |
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