Kazuo vs Kaz

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

Name A

Kazuo

Boy name

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Name B

Kaz

Boy name · Rank #3278

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Which name is more popular?

Metric Kazuo Kaz
Current Rank Unranked #3278
Total Births (all years) 757 695
Peak Year 1921 2022
Peak Year Births 57 52
Peak Decade 1920ss 2020ss
Gender Boy Boy
First Recorded Year 1911 1918

Births by Decade

Decade Kazuo Kaz
1910ss 241 5
1920ss 375 —
1930ss 106 —
1940ss 11 —
1970ss — 25
1980ss — 73
1990ss — 98
2000ss 24 96
2010ss — 180
2020ss — 218

Recent Annual Births (2014–present)

Year Kazuo Kaz
2014 — 7
2015 — 22
2016 — 22
2017 — 27
2018 — 21
2019 — 35
2020 — 41
2021 — 37
2022 — 52
2023 — 52
2024 — 36

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, 1911–2009.

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