Rising since 2005, #364 for boys today.
Popularity of Kaizen since 2004
Babies named Kaizen per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 2000s | 66 |
| 2010s | 465 |
| 2020s | 2,508 |
Meaning & origin
Kaizen is a Japanese name that entered the U.S. baby name scene only recently, first recorded in 2004. Its popularity has been on a steady rise since 2005, reaching a rank of 364 in 2025, with about 1 in 1,908 newborn boys choosing the name. The name peaked in popularity in 2025, reflecting a growing interest in names with positive philosophical meanings. While initially little known, Kaizen has seen its strongest adoption in Hawaii, Mississippi, and Delaware. As a modern virtue name rooted in Japanese business culture, Kaizen appeals to parents seeking a name that embodies self-improvement and forward-thinking values.
Kaizen is a Japanese compound of 'kai' (change) and 'zen' (good), literally meaning 'improvement.' It gained global recognition through its use in business philosophy, particularly at Toyota, where it refers to a culture of continuous incremental improvement. As a personal name, Kaizen is a modern adoption, reflecting a positive virtue that parents hope to instill.
Where Kaizen is most popular
Births per 100,000 boys by state, 2025. The lightest shade means too few recorded births.
“Kaizen” around the world
Where Kaizen lands in the latest official birth statistics abroad, matched to the U.S. spelling.
France
5
babies in 2024
New Zealand
20
babies in 2025
Sources: INSEE (France) · NZ Dept of Internal Affairs (New Zealand).
Nicknames & variants
Nicknames: Kai, Zen
Sibling names for Kaizen
Names that share Kaizen's style, for a brother or sister.
