Hachirou as a Baby Name. Meaning and Origin of Hachirou

What is the meaning of the name Hachirou ?

The baby name Hachirou is a Male name and is pronounced /ha.t͡ɕi.ɾoː/ (HAH-chee-roh).

Hachirou is Japanese in Origin.

Hachirou is a Japanese masculine given name formed from hachi (“eight”) and rō/rou, commonly written as 郎 (“son; young man”) or 朗 (“bright, clear”). The standard kanji combinations are 八郎 and 八朗, yielding senses such as “eighth son,” “eight + son,” or “eight + bright.” In Japanese name practice, kanji choice fine‑tunes nuance, and the number eight is traditionally auspicious, symbolizing widening fortune.

Names built on numerals plus -rō gained currency in medieval and Edo-period households, especially among samurai and merchants, to indicate male birth order; Hachirou signaled an eighth-born boy or honored the lucky ‘eight’ regardless of order. Contemporary use is uncommon but occasionally chosen for a vintage, dignified feel. Romanization varies: Hachirō (Hepburn with macron), Hachiro (without diacritics), Hachirou or Hachiroh (wāpuro/older). Related numeric variants include Ichirō, Jirō, Saburō, Shirō, Gorō, Rokurō, and Shichirō; nicknames include Hachi and Rō.

⚙ Hachirou is vanishingly rare. In all, it appears just 3 times, across 3 countries.