Kaisen
Kaisen was the 800th most popular name for boys in 2025, given to 311 babies. That is its highest rank since records began in 1880. Over the last ten years it has moved up 833 places. More babies were named Kaisen in the 2020s than in any other decade.
Meaning (as Kayson) Origin not documented
- Rank in 2025
- #800 boys, up 252 places since 2020
- Babies in 2025
- 311boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 2025311 babies
- Total since 1880
- 2,637babies recorded
What does the name Kaisen mean?
Kaisen is a spelling of Kayson, pronounced the same way, so it shares Kayson's meaning and origin.
Kayson is a modern American boy's name that Wiktionary describes as a variant of Cason. Cason is an English surname that Wiktionary explains as a corruption of the place name Cawston in Norfolk, and also an Italian surname from a Venetian word for 'house'. The spelling with K follows the fashion for names like Kayden and Kyson. Its meaning as a given name is not documented beyond these links.
How sure is this? Not documented. A modern respelling of Cason; no meaning of its own.
Related names: Cason, Kason, Kasen, Kayden.
Sources for this meaning
- Wiktionary, entry 'Kayson', Wiktionary (Wikimedia Foundation); facts restated, no text reused
- Wiktionary, entry 'Cason', Wiktionary (Wikimedia Foundation); facts restated, no text reused
Kaisen popularity since 1880
A few girls are given the name too: 12 since 2014.
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #800 | 311 |
| 2020 | #1,052 | 192 |
| 2010 | #2,606 | 47 |
| 2000 | — | — |
| 1990 | — | — |
| 1980 | — | — |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Kaisen, counting every spelling?
Kaisen is a spelling of Kayson, a name family that ranked #85 for boys in 2025 once every spelling is counted together, compared with #800 for Kaisen on its own. Together these spellings went to 4,210 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Kayson | 1,305 | #264 | 6,143 |
| Kaison | 557 | #540 | 2,981 |
| Kaysen | 772 | #415 | 2,802 |
| Cayson | 296 | #835 | 1,777 |
| Kaisen | 311 | #800 | 1,281 |
| Kaycen | 235 | #974 | 888 |
| Caysen | 143 | #1,339 | 772 |
| Kaisyn | 81 | #1,927 | 448 |
| Caison | 60 | #2,307 | 327 |
| Kaeson | 54 | #2,501 | 298 |
| Caisen | 51 | #2,574 | 203 |
| Kaizyn | 64 | #2,219 | 185 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Kaisen?
311 of the 3,606,400 babies born in the US in 2025 were named Kaisen (0.09 per 1,000 births). For a boy named Kaisen born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 27 (of 430 pupils) would have a child named Kaisen.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Kaisen?
About 2,600 people born in the US named Kaisen are alive today, with a median age of 6; half are between 3 and 10. That makes Kaisen a young name: most people with it are children.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Kaisen by state
How common Kaisen was among boys born in each state in 2021–2025. It is notably more common than nationally in Mississippi (6.7×), Louisiana (3.8×), South Carolina (2.9×), Alabama (2.9×), North Carolina (2.0×). In 21 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Kaisen: their share of US boys followed the most similar curve since 1880. If you like Kaisen, they share its era and feel.
Questions about the name Kaisen
How popular is the name Kaisen?
Kaisen was the 800th most popular name for boys in 2025, given to 311 babies. That is its highest rank since records began in 1880. Over the last ten years it has moved up 833 places. More babies were named Kaisen in the 2020s than in any other decade.
Is Kaisen a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Kaisen in the US.
Where is Kaisen most popular?
In 2021–2025, Kaisen was most common in Mississippi (0.99 per 1,000 boys), followed by Louisiana and South Carolina.