Last name Hiroishi (Hiroishi 
) , across the world, is a very rare surname. The surname Hiroishi is habitual in Mexico, where it is a very rare surname, Brazil, and the United States, where it is an extremely rare surname. More prevalently, Hiroishi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hiroishi | Brazil, Mexico, Japan, United States, China |
| atsushi hiroishi researcher (ORCID 0000-0001-9691-8817) |
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