Kaisyn
How to say it: KAY-sin · /ˈkeɪsɪn/
Modern American invention blending Kai and -syn - unisex respelling of Kayson/Kaison.
Kaisyn was the 61st most popular boys’ name in the United States in 2025, given to 90 babies of either sex (Social Security Administration). The 2020s are its busiest decade so far, its births are up about 30% in ten years, and it is projected to slip to #62 by 2030.
Updated · SSA 2025 data, published May 2026 · Insee 2025 data, published July 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #61 |
|---|---|
| Babies born in 2025 (both sexes) | 90 |
| Share of births | 1 in 571 |
| Peak decade | 2020s |
| Change over 10 years | +30% |
| Projected rank for 2030 (estimate) | #62 |
| In France, 2025 | #275 among boys’ names, 0 births |
Sources: Social Security Administration (SSA), Insee (France). How we compute these figures.
Its life, decade by decade
Kaisyn is a newcomer: almost all of its history is from the last forty years.
What goes with it
Nicknames
- Kai
- Kay
Honouring a Kaisyn in the family
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Kaisyn is about 1 in 24.
Around the world
This spelling is used in English.
In France: #275 for boys in 2025.
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