Kazu vs Kazuo

Side-by-side comparison of Kazu and Kazuo — popularity rank, total births, peak decade, and historical trends from Social Security Administration data.

Name A

Kazu

Boy name

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Name B

Kazuo

Boy name

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Which name is more popular?

Metric Kazu Kazuo
Current Rank Unranked Unranked
Total Births (all years) 10 762
Peak Year 2008 1921
Peak Year Births 5 57
Peak Decade 2000ss 1920ss
Gender Boy Boy
First Recorded Year 2008 1911

Births by Decade

Decade Kazu Kazuo
1910ss — 241
1920ss — 375
1930ss — 106
1940ss — 11
2000ss 5 24
2020ss 5 5

Recent Annual Births (2014–present)

Year Kazu Kazuo
2021 5 —
2025 — 5

Data Sources

Source: U.S. Social Security Administration, Baby Names from Social Security Card Applications — National Data, ssa.gov/oact/babynames.
Source: SSA Annual Name Rankings, 2008–2021.

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