Surname Imaoka (Imaoka 
, 今岡 ) , all over the world, is a rare cognomen. The cognomen Imaoka is characteristic of Japan, where it is a very rare surname, the United States, and Canada. Not in comparison with a country's population, the name is most common in Japan, the United States, and China. Also, Imaoka is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Imaoka | Japan, China, United States, Canada, Brazil |
| 今岡 | China |
| masako imaoka (b. 1965) |
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| yuki imaoka researcher |
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| takane imaoka researcher |
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| koichi imaoka researcher (ORCID 0000-0002-5869-2201) |
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| t. imaoka researcher |
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| hiroshi imaoka researcher (ORCID 0000-0003-0584-0095) |
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| teruo imaoka Ph.D. Monash University 1977 |
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| tatsuhiko imaoka researcher |
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| yukihiro imaoka researcher (ORCID 0000-0002-7054-2708) |
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| ayuko imaoka researcher (ORCID 0000-0001-9269-0755) |
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| susumu imaoka researcher (ORCID 0000-0003-4350-2337) |
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| masakazu imaoka researcher (ORCID 0000-0002-5849-7107) |
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| masumi imaoka JP (b. 1976) |
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