In the entire world, Ndidi (Ndidi 
) is a common epicene given name. The first name Ndidi is habitual in Nigeria, where it is quite a common unisex name, South Africa, where it is a rare gender-neutral name, and the United Kingdom, where it is a very rare dominantly girly, but seldom boy's name. Measured by absolute frequency, it is the most numerous in Nigeria, the United States, and South Africa. Likewise, Ndidi is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Ndidi | Niger, Nigeria, United States, South Africa, Tanzania |
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ndidi okonkwo nwuneli Expert on African agriculture and nutrition, philanthropy, and social innovation., NG (b. 1975) |
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ndidi o Canadian singer, CA (b. 1979) |
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wilfred ndidi Nigerian association football player, NG (b. 1996) |
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ndidi agwunedu German handball player, DE |
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| ndidi dike Nigerian artist, NG (b. 1960) |
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| ndidi nnoli-edozien Nigerian businesswoman (b. 1972) |
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| ndidi okezie CEO of the UK Youth charity 1979-, NG (b. 1979) |
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| ndidi nwosu Nigerian Paralympic powerlifter, NG (b. 1979) |
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| ndidi njoku researcher |
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| ndidi nwangwu-ike researcher (ORCID 0000-0003-4667-3086) |
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| ndidi uzor researcher |
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| ndidi agala researcher |
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| ndidi ngwuluka Nigerian pharmacologist, NG |
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| ndidi ekubia GB (b. 1973) |
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| ndidi kanu Footballer from Nigeria, NG (b. 1986) |
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