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“From Japanese kaizen — improvement: kai 'change' + zen 'good'” — Japanese origin
Boy's name · #364 in the US (2025) · Trending
Kaizen is climbing: on the charts since 2004, it reached #364 in 2025 — its strongest showing yet, with about 900 boys given the name last year. Roughly 3,000 have carried it all-time. In Hawaii it runs about 11× its national rate and ranks #80.
Around the world: about 1 in 790 boys in New Zealand (2025) · about 1 in 4,800 boys in Canada (2024) · about 1 in 12,000 boys in England & Wales (2025).
Appears in 2020-2025 birth records of 36 states. See the full state-by-state map on this page.
Similar names: Kaisen · Akari · Kaiser · Lian · Aizen · Kasai
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