Family name Hanaoka (ハナオカ 
, Hanaoka 
, Ханаока 
) , around the globe, is a rare cognomen. The last name Hanaoka is habitual in Japan, where it is a rare surname, Brazil, and France, where it is a very rare surname. In absolute terms, it is commonest in Japan, Brazil, and the United States. More prevalently, Hanaoka is the forename as well as the last name.
| VARIANT | COUNTRY |
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| ハナオカ | Japan |
| Hanaoka | United States, Japan, Indonesia, France, Brazil |
| Ханаока | Ukraine |
| kazuo hanaoka (b. 1899) |
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| ichiro hanaoka (b. 1908) |
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| kazuo hanaoka olympic sailor from Japan (b. 1949) |
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| bernard hanaoka PL (b. 1949) |
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| masayuki hanaoka researcher |
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| kenjiro hanaoka researcher |
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| shouhei hanaoka researcher ORCID ID = 0000-0002-7496-1651 |
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| kohei hanaoka researcher |
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| yoshiki hanaoka researcher |
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| masanori hanaoka researcher |
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| noboru hanaoka researcher |
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| beatriz y hanaoka researcher (ORCID 0000-0002-2695-4852) |
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| hideki hanaoka researcher ORCID ID=0000-0003-0186-9296 |
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| takaomi hanaoka researcher ORCID ID = 0000-0001-5722-7642 |
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| tomohiko hanaoka researcher |
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