Last name Cuinn (Cuinn 
) , globally, is a very rare surname. The cognomen Cuinn is characteristic of Ireland, where it is a rare surname, the United Kingdom, where it is a very rare surname, and Germany, where it is an extremely rare surname. Also, Cuinn is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cuinn | United States, United Kingdom, Ireland, Germany |
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pádraig ó cuinn Irish Republican Army officer (b. 1898) |
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| carrie cuinn speculative fiction writer and anthologist, US (b. 1973) |
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| tadhg ó cuinn Irish scribe and author |
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| art mac cuinn Irish king |
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| éadhmonn ua cuinn |
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