Last name Hyatt (Hyatt 
, Хайат 
, ハイアット) , in the entire world, is a common cognomen. The family name Hyatt is habitual in Jamaica, where it is quite a common surname, the United States, where it is quite a rare surname, and Canada. Not in comparison with a country's population, it is commonest in the United States, the United Kingdom, and Jamaica. Much less frequently, Hyatt is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hyatt | Jamaica, Australia, United Kingdom, Canada, United States |
| Хайат | Kazakhstan, Russia, Kyrgyzstan, Ukraine |
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john hyatt English minister and missionary, GB (b. 1767) |
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| gilbert hyatt settler of Canada (b. 1761) |
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thaddeus hyatt abolitionist and inventor, US (b. 1816) |
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theodore hyatt Recipient of the Medal of Honor, US (b. 1830) |
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james w. hyatt American politician (1837-1893), US (b. 1837) |
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john wesley hyatt American inventor of plastic (1837-1920), US (b. 1837) |
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alpheus hyatt American zoologist, paleontologist (1838-1902), US (b. 1838) |
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| jane hyatt (1799-1839) (b. 1799) |
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stanley portal hyatt English explorer, hunter, and writer, GB (b. 1877) |
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| elisha h. hyatt American surgeon (1827-1898), US (b. 1827) |
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gordon hyatt TV writer and producer, US (b. 1901) |
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chuck hyatt American basketball player (1908-1978), US (b. 1908) |
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| thaddeus p. hyatt American dentist, US (b. 1864) |
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james hyatt American missionary, US (b. 1922) |
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| byron e. hyatt American politician, US (b. 1873) |
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