Family name Quilty (Quilty 
) , throughout the world, is quite a rare last name. The cognomen Quilty is characteristic of Jersey, where it is quite a common surname, Ireland, where it is quite a rare surname, and Australia. In absolute terms, it most frequently occurs in the United States, Australia, and Canada.
| VARIANT | COUNTRY |
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| Quilty | Canada, Australia, United States, United Kingdom, Ireland |
| john quilty Australian cricketer, AU (b. 1860) |
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| tom quilty Australian pastoralist, AU (b. 1887) |
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| leonard quilty Ontario Member of Provincial Parliament, 1962-1963, CA (b. 1920) |
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| johnny quilty Canadian ice hockey player, CA (b. 1921) |
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ben quilty Australian painter, AU (b. 1973) |
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| patrick quilty Australian paleontologist, AU (b. 1939) |
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| sean quilty Olympic athlete, AU (b. 1966) |
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| margaret quilty Peerage person ID=150860 |
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| billy j quilty researcher |
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| calvin d quilty researcher (ORCID 0000-0002-0294-6815) |
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| tim quilty Australian politician, AU |
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| thomas quilty Peerage person ID=150861 |
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| domingo cabarrús y quilty Peerage person ID=614690 |
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| dan quilty college basketball player (1948–1949) New York University |
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| john m quilty researcher |
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