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Home › Baby Names Directory › Kazuko

Kazuko

♀ Girl

Pronounced kah-ZOO-koh /kɑˈzuː.koʊ/Medium

Meaning: Kazuko is a traditional Japanese girls' name. Written with kanji meaning kazu ('harmony, peace') plus ko ('child'), it is commonly read 'harmonious child' or 'child of peace'; other kanji give related senses. It was a classic name for Japanese and Japanese-American girls of the early twentieth century.Medium

In 30 seconds: Kazuko is a classic Japanese girls' name (said 'kah-ZOO-koh'), usually 'harmonious child' or 'child of peace', from kazu, 'harmony', plus ko, 'child'.
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Origin MediumJapanese
MeaningKazuko is a traditional Japanese girls' name. Written with kanji meaning kazu ('harmony, peace') plus ko ('child'), it is commonly read 'harmonious child' or 'child of peace'; other kanji give related senses. It was a classic name for Japanese and Japanese-American girls of the early twentieth century.
U.S. rank (1945)#4902 ↘ Falling
1945 U.S. births5 girls (0.00% of U.S. girls)
Peak year1927
Total births (all-time)≈ 398

Popularity in the U.S. · SSA data

peak 192719151945

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Kazuko is a traditional Japanese name combining an element like kazu ('harmony, peace') with ko ('child'), giving 'harmonious child'. In American records it belongs almost entirely to a small Japanese-American cohort of the early twentieth century, appearing from around 1915. It crested about 1927 and, tellingly, the records thin out sharply after the wartime years.

The name's tiny U.S. span, ending around the mid-nineteen-forties, reflects the disruption of Japanese-American communities during World War Two internment. In Japan Kazuko remained a common name for that generation. It reads as a graceful, three-beat heritage name carrying real history for the families who bore it.

Did you know? In U.S. records Kazuko appears mainly with a small pre-World-War-Two Japanese-American cohort — a community whose lives were upended by wartime internment, after which the name all but disappears here.
Overall data confidence 65%
References — Kazuko — Japanese given name; kanji-based meaning

Variations

KazueKazumi

Nicknames

KazuKo

Famous Bearers

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If you like Kazuko…

Yoshiko— a like classic Japanese -ko girls' name of the era
Hanako— shares the -ko 'child' ending and generation
Haruko— another traditional -ko name of the period
Kimiko— lands in the same popularity range
Kamiko— a similarly popular pick

Explore names like Kazuko

By themevintageheritagejapanesepeaceharmony

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Frequently Asked

What does the name Kazuko mean?

Kazuko is a Japanese girls' name usually meaning 'harmonious child' or 'child of peace', from kazu ('harmony') plus ko ('child').

How do you pronounce Kazuko?

It's said kah-ZOO-koh /kɑˈzuː.koʊ/ — three syllables, stress on the second.

Is Kazuko a boy or girl name?

Kazuko is used as a girl's name.

How popular is Kazuko?

Kazuko was a rare name in the U.S., borne mainly by a small early-century Japanese-American cohort, and has been very uncommon here since mid-century.

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