Cognomen Kero (Kero 
, كيرو 
, Cœur 
) , worldwide, is a common last name. The cognomen Kero is characteristic of Egypt, where it is quite a common surname, Croatia, and Finland, where it is quite a rare surname. In absolute terms, it most frequently occurs in Egypt, Ethiopia, and Algeria. More prevalently, Kero is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kero | Ethiopia, India, Algeria, Egypt, Finland |
| كيرو | Sudan, Kuwait, Saudi Arabia, Iraq, Egypt |
| Cœur | Tunisia, Cameroon, Algeria, Morocco, Egypt |
| Керо | Russia, Kazakhstan |
| william e. kero American military personnel, US (b. 1921) |
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| kero antoyan FR (b. 1912) |
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| reino kero Finnish historian, FI (b. 1939) |
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kero one American rapper, US |
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| pavao kero HR (b. 1940) |
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| esa kero Finnish journalist, FI (b. 1951) |
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| ulf kero Swedish politician, SE (b. 1951) |
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| jaakko kero Finnish long-distance runner, FI (b. 1972) |
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| jukka kero Finnish long-distance runner, FI (b. 1974) |
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| ida teresia kero researcher |
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| jukka kero researcher ORCID ID = 0000-0001-8767-7222 |
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| sami kero Finnish photographer, FI |
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| elina kero Finnish American football player |
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| andreina kero researcher (ORCID 0000-0002-4006-3167) |
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| jakob kero researcher (ORCID 0000-0003-1907-5291) |
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