Kaisen
Gender: Boy
Meaning: Sea, ocean; improvement
Origin: Japanese/Modern
Popularity: Ranked #800 in 2025 with 311 babies born.
History: May relate to the Japanese 'kai' (sea) or 'kaizen' (continuous improvement). It has emerged as a modern name combining Asian-influenced sounds with Western naming trends.
Name length: 6 letters
How common is Kaisen? About 1 in 10,703 babies born in 2025 were named Kaisen, or roughly 0.9 per day in the United States.
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Frequently asked about Kaisen
What does the name Kaisen mean?
Kaisen means “Sea, ocean; improvement” from Japanese/Modern roots.
What is the origin of the name Kaisen?
Kaisen has Japanese/Modern origin. The traditional meaning is “Sea, ocean; improvement”.
How popular is Kaisen?
Kaisen ranked #800 in 2025 — given to 311 babies that year.
When was Kaisen most popular?
Kaisen peaked in 2025 with 311 babies registered that year.
Is Kaisen a boy or girl name?
Kaisen is predominantly a boys' name — over 90% of Kaisens in registered births are male.
Is the name Kaisen rising or falling in popularity?
Kaisen has risen 252 spots in the rankings over the last 5 years — from #1052 in 2020 to #800 in 2025.
How long has Kaisen been recorded?
Kaisen appears in birth records across 22 years — from 2004 through 2025.