Explore / Japanese Given name & surname
Hirai Hirai is a surname from Japanese.
Original Japanese 平井
At a glance
Popularity score No recent data Boys and girls Usage not recorded
Sex usage isn’t recorded for this spelling yet.
People named Hirai in the U.S. Very rare Fewer than about 30 people. Estimated from birth records for children and population records for adults.
Interest on PerfectNameFinder Not yet scored Not enough visits yet to score. Every read and save counts toward it. Hirai’s family of names In Japanese usage, Hirai as a surname is a Roman-alphabet rendering of 平井. In English usage, Hirai as a surname was borrowed from the Japanese form 平井.
Walk Hirai’s family in the name graph →
Hirai 平井 The ring: spellings.
Hover or tab through the constellation to see how each name is related. Bigger dots are names more people in the U.S. share.
Spellings & scripts 1 The same name written differently, including transliterations into other scripts.
Similar names If you love Hirai, these share its style, era, origin or sound, from outside its own family.
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Sibling ideas Names that share Hirai’s feel without repeating its first letter or rhyming with it.
About this profile. Meanings and origins are drawn from historical dictionaries and reference works, including Wiktionary; where interpretations differ, we say so. Popularity comes from U.S. Social Security birth records, 1880–2025. Famous namesakes come from Wikidata. Related names are linked through documented relationships; likely links are labeled as such.