Last name Iwuagwu (Iwuagwu 
) , worldwide, is quite a rare cognomen. The surname Iwuagwu is characteristic of Nigeria, where it is a rare surname, Ireland, and the United Kingdom, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Nigeria, the United States, and the United Kingdom. Also, Iwuagwu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iwuagwu | United Kingdom, Ireland, South Africa, United States, Nigeria |
| ebenzer ogugua iwuagwu Ph.D. University of Wisconsin-Madison 1957 |
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| amah iwuagwu |
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