Surname Irisawa (Irisawa 
) , in all the world, is a rare cognomen. The family name Irisawa is characteristic of Singapore, where it is a very rare surname, Japan, and Indonesia. In absolute terms, it is commonest in Indonesia, Japan, and Philippines. Likewise, Irisawa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Irisawa | Philippines, Japan, United States, Indonesia, China |
| koji irisawa researcher |
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| ryokichi irisawa researcher |
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| hiroshi irisawa researcher |
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| atsushi irisawa researcher |
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| toshifumi irisawa researcher (ORCID 0000-0002-8801-7688) |
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