Last name Tregear (Tregear 
) , in the entire world, is a rare cognomen. The surname Tregear is characteristic of Australia, where it is a rare surname, New Zealand, and the United Kingdom. In absolute terms, it is the most numerous in the United Kingdom, Australia, and the United States.
| VARIANT | COUNTRY |
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| Tregear | New Zealand, Australia, United States, United Kingdom, Peru |
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edward tregear New Zealand public servant and surveyor (1846-1931), NZ (b. 1846) |
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| g.s. tregear British cartoonist (b. 1802) |
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| albert allan tregear Australian public servant (b. 1896) |
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| mary tregear British art historian, GB (b. 1924) |
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| gordon tregear English ceremonial officer, GB (b. 1944) |
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| francis tregear British QC, GB (b. 1957) |
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| peter tregear Australian musicologist (b. 1970) |
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| geoffrey tregear Australian scientist |
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| james tregear researcher |
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| stephen james tregear researcher |
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| molly kirsty gordon tregear Peerage person ID=690702 |
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| chelsey tregear Australian netball player, AU (b. 1983) |
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| tregear & lewis |
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