Kazuya vs Kazuo

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

Name A

Kazuya

Boy name

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Name B

Kazuo

Boy name

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Which name is more popular?

Metric Kazuya Kazuo
Current Rank Unranked Unranked
Total Births (all years) 65 762
Peak Year 1987 1921
Peak Year Births 8 57
Peak Decade 2000ss 1920ss
Gender Boy Boy
First Recorded Year 1986 1911

Births by Decade

Decade Kazuya Kazuo
1910ss — 241
1920ss — 375
1930ss — 106
1940ss — 11
1980ss 13 —
1990ss 17 —
2000ss 24 24
2020ss 11 5

Recent Annual Births (2014–present)

Year Kazuya Kazuo
2023 6 —
2025 5 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, 1986–2025.

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