Family name Hiraya (Hiraya 
) , worldwide, is a very rare surname. The cognomen Hiraya is habitual in Malaysia, where it is an extremely rare surname, Philippines, and Mexico. Not in comparison with a country's population, it most frequently occurs in India, Philippines, and Brazil. Much more frequently, Hiraya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hiraya | Malaysia, Philippines, Mexico, India, Brazil |
| daigo hiraya researcher |
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