Surname Hayasaka (ハヤサカ 
, Hayasaka 
, はやさか) , in all the world, is a rare last name. The family name Hayasaka is habitual in Japan, where it is a rare surname, Brazil, where it is a very rare surname, and Myanmar. In absolute terms, it is commonest in Japan, Brazil, and the United States. More prevalently, Hayasaka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ハヤサカ | Japan |
| Hayasaka | Brazil, United States, Mexico, Indonesia, Japan |
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kota hayasaka Japanese slackliner, JP |
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| shōji hayasaka (b. 1927) |
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eli hayasaka BR |
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| kiyoshi hayasaka Japanese cross-country skier, JP (b. 1954) |
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| nanao hayasaka (b. 1947) |
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| eisuke hayasaka botanist (b. 1973) |
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| yuki hayasaka Japanese association football player |
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| kiyoshi hayasaka Japanese particle physicist, member of the Belle collaboration |
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| kiyoshi hayasaka researcher (ORCID 0000-0003-3621-8901) |
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| tomoko hayasaka researcher |
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| shinichi hayasaka researcher |
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| satoru hayasaka Ph.D. University of Michigan 2003 |
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| kazuki hayasaka researcher |
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| naoto hayasaka researcher |
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| ichiro hayasaka |
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