Osamu — boys' name

What the Data Says About Osamu

The Social Security Administration has registered 94 babies named Osamu between 1920 and 1997, spanning 78 consecutive years of U.S. birth records. As a boy's name, Osamu currently falls outside the top 1,000 boys' names for 1997. The name reached its historical peak in 1925, when 11 babies received it in a single year.

Decade-level aggregation shows that Osamu performed strongest in the 1920s, accumulating 58 births during that ten-year window. Across the 5 decades of recorded activity, Osamu shows a clear decline from its mid-century high. Geographically, the name is most concentrated in California, which accounts for 18 births — the largest state-level total in the dataset — followed by Hawaii. In total, SSA state-level files list Osamu in 2 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Osamu in our reference dataset. These figures derive from SSA's annual national and state-level name files, which include any name appearing at least five times in a given year or state-year; names below that threshold are suppressed for privacy and therefore excluded from the totals shown here. The 94 total represents a lower bound — actual usage may be higher in years or states where the count fell below the disclosure floor. This page is provided for informational and research purposes only and does not constitute personal, legal, or naming advice.