Cognomen Haddox (Haddox 
) , in the entire world, is quite a rare family name. The family name Haddox is characteristic of the United States, where it is a rare surname, New Zealand, and Canada, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Haddox | United Kingdom, Canada, Brazil, New Zealand, United States |
| alpheus lewis haddox (b. 1829) |
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| john haddox American philosopher (1929-2017), US (b. 1929) |
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| hugh k haddox researcher |
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| greg haddox college basketball player (1980–1982) Centenary (LA) |
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| j. david haddox pain management researcher, executive at Purdue Pharma, US |
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| candace l haddox researcher |
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| susan e. haddox (b. 1971) |
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| benjamín edward haddox |
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