Is Kazuo a boy or girl name?

Kazuo is a boy’s name. Of the 762 Americans recorded with the name since 1880, 0.0% were girls and 100.0% were boys.

Kazuo

Recorded 1911–2025 · United States

Kazuo was most popular in 1921, when 57 American babies were given the name — ranking #1,850 that year. In 2025 it ranked #24,763, with 5 births. Across 1880–2025 the Social Security Administration has recorded 762 people named Kazuo.

Kazuo over time

Births per year. The dot marks Kazuo’s peak in 1921. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Kazuo a boy’s or a girl’s name?

Across the whole record Kazuo is a boy’s name — 0.0% of the 762 Americans given it were girls and 100.0% were boys. In births since 2016 it is 0% girls and 100% boys.

Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.

Names that peaked alongside Kazuo

Where Kazuo is most concentrated

How much more common the name is in each state than across the country as a whole.

Explore further

See Kazuo on the interactive charts

Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org