Last name Kyriakou (Kyriakou 
, Κυριακού , Кириаку 
) , in the world, is a common family name. The family name Kyriakou is habitual in Cyprus, where it is a widespread surname, Greece, where it is quite a common surname, and Australia, where it is a rare surname. In absolute terms, this name is the most popular in Cyprus, Greece, and the United Kingdom. Much less frequently, Kyriakou is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kyriakou | Australia, Greece, Cyprus, United States, United Kingdom |
| Κυριακού | Greece |
| Кириаку | Russia |
| giōrgos hēr. kyriakou (b. 1915) |
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| xenophon kyriakou Greek businessman (born 1972) (b. 1972) |
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| charalampia kyriakou researcher |
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| andreas kyriakou researcher |
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| theodosios kyriakou researcher |
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| georgia kyriakou researcher |
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| ioanna kyriakou researcher ORCID ID = 0000-0003-2105-4078 |
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| faidon kyriakou researcher (ORCID 0000-0001-6759-8033) |
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| georgios kyriakou researcher |
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| kalliopi kyriakou researcher (ORCID 0000-0002-9387-852X) |
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| sophia kyriakou researcher |
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| aikaterini kyriakou researcher |
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| v. kyriakou researcher |
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| theodore kyriakou (b. 1974) |
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| demetris kyriakou Cypriot footballer, CY (b. 1986) |
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