Masculine dossier · first seen 1914

Masayoshi

Extinct Near statistical disappearance

Peak era

1918

Peak births

Current vitality

Dormant

Peak generation

Greatest Generation

Quick answers about Masayoshi

How rare is Masayoshi?

Masayoshi has not appeared in SSA records since 1929. It is effectively extinct as a new baby name — no boys received it in the latest available data.

Is Masayoshi still popular?

No. Masayoshi is extinct in new births; the SSA last recorded it in 1929.

Where is Masayoshi most common?

Masayoshi has its strongest geographic signal in Hawaii, where it appears 266.1× more often than the national baseline.

1914Peak 19182025

Peak year

1918

Decline from peak

100%

2025

All-time

133

Masayoshi disappeared from SSA records in 1929 and has not been seen in 96 years. Its absence is now longer than many names' entire recorded lifespan.

Masayoshi peaked in 1918, when 13 boys were given the name.

No boys were recorded with this name in 2025 — at least not five of them (the SSA's reporting floor).

Down 100% from its peak.

In all, the Social Security Administration has recorded about 133 Americans named Masayoshi since 1914.

Rarity scoreStatistical floor

Peak generationGreatest Generation

StabilityHighly era-bound

TrajectoryNear statistical disappearance

Living profile

Estimated living Americans with this name.

Median age102

Core range99–104

Playground Density Index 0.0%

Wave type

Flash Flood

A concentrated generational spike rather than a slow classic.

Geographic heartland

Hawaii

266.1× higher affinity than the national baseline.

Hawaii · 1920s 266.1×