Last name Hait (Hide 
, Hait 
, Хаит 
) , all over the world, is a common cognomen. The surname Hait is habitual in India, where it is quite a rare surname, Norway, and Albania. Measured by absolute frequency, it is commonest in India, the United Kingdom, and Russia. Likewise, Hait is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hide | Japan, United Kingdom, United States, India, Indonesia |
| Hait | Argentina, United Kingdom, United States, India, Egypt |
| Хаит | Kyrgyzstan, Kazakhstan, Belarus, Russia, Tajikistan |
| 海特 | China |
| carlos emory hait (b. 1828) |
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paul hait American swimmer, US (b. 1940) |
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| alexander hait chess player (b. 1952) |
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| william n. hait (b. 1949) |
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| arghya kumar hait botanist (b. 1963) |
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| dilip kumar hait Indian politician, IN |
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| nitai c hait researcher |
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| sabrina helmold hait researcher |
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| subrata hait researcher |
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| débora hait Argentine taekwondoin, AR (b. 1980) |
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| tom aharon hait researcher |
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| diptarka hait researcher ORCID ID = 0000-0003-1570-920X |
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| alon schneider hait researcher |
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| bill hait college basketball player (1969–1969) Pennsylvania |
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| petr hait CZ (b. 1976) |
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