Masatoshi — boys' name

What the Data Says About Masatoshi

The Social Security Administration has registered 16 babies named Masatoshi between 1918 and 1919, spanning 2 consecutive years of U.S. birth records. As a boy's name, Masatoshi currently falls outside the top 1,000 boys' names for 1919. The name reached its historical peak in 1918, when 10 babies received it in a single year.

Decade-level aggregation shows that Masatoshi performed strongest in the 1910s, accumulating 16 births during that ten-year window. Geographically, the name is most concentrated in Hawaii, which accounts for 13 births — the largest state-level total in the dataset — followed by . In total, SSA state-level files list Masatoshi in 1 of the 51 U.S. reporting jurisdictions.

No etymological entry is currently available for Masatoshi 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 16 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.