Cognomen Liddicoat (Liddicoat 
) , around the globe, is quite a rare last name. The last name Liddicoat is habitual in Australia, where it is quite a rare surname, New Zealand, where it is a rare surname, and Canada. Not in comparison with a country's population, the name is most common in the United States, Australia, and the United Kingdom.
| VARIANT | COUNTRY |
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| Liddicoat | Australia, United States, United Kingdom, New Zealand, Canada |
| richard t. liddicoat gemologist, US (b. 1918) |
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| anthony liddicoat (b. 1962) |
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| albert austin liddicoat Ph.D. Stanford University 2002 |
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| craig liddicoat researcher |
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| johnathon liddicoat researcher ORCID ID = 0000-0001-7370-3936 |
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| stephanie liddicoat researcher |
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| brian j liddicoat researcher (ORCID 0000-0003-3644-2241) |
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| joseph c. liddicoat |
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| sean liddicoat association football player, NZ (b. 1997) |
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