Kaisen
- Gender
- Boy
- Say it
- KY-sen
- Origin
- Modern
- UK rank, 2025
- #3,747 for boys
- US rank, 2025
- #800 for boys
Kaisen is a boys' name of Modern origin. In 2025 it ranked 3,747th for boys in the UK (5 babies) and 800th for boys in the US (311 babies).
What does Kaisen mean?
Modern: Kai + -sen, like Kayson
Shares its spelling with the title of the Japanese anime Jujutsu Kaisen, and also fits modern names like Kayson.
Is Kaisen a girl's or a boy's name?
Kaisen is a boys' name. In 2025, it was given to 5 boys in the UK and 311 boys in the US. Too few girls were given it to be listed.
How popular is Kaisen in the UK?
- Rank in 2025
- 3,747th among boys
- Babies in 2025
- 5 about 1 in 60,000 boys
- Five-year trend
- Steady down 10% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 5 boys in the UK were named Kaisen, making it the 3,747th most popular name for boys. Five years earlier, in 2020, it was 3,108th. Its busiest year was 2015, with 8 boys.
2025 had more boys named Kaisen than any year since 2020.
In 2025, 69 boys in the UK were given Kaisen or a name that sounds the same. With every name's spellings counted this way, that ranks #562, up from #3,747 for this spelling alone.
Among boys in 2025, it was 3,656th in England and Wales.
Kaisen in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 5 | #3,747 |
| 2024 | 0 | – |
| 2023 | 4 | #4,335 |
| 2022 | 1 | #6,413 |
| 2021 | 0 | – |
| 2020 | 6 | #3,108 |
| 2019 | 4 | #4,126 |
| 2018 | 0 | – |
| 2017 | 6 | #3,191 |
| 2016 | 0 | – |
| 2015 | 8 | #2,614 |
| 2014 | 0 | – |
| 2013 | 0 | – |
| 2012 | 4 | #4,147 |
| 2011 | 0 | – |
| 2010 | 3 | #4,865 |
How popular is Kaisen in the US?
- Rank in 2025
- 800th among boys
- Babies in 2025
- 311 about 1 in 5,500 boys
- Five-year trend
- Rising up 54% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 311 boys in the US were named Kaisen, making it the 800th most popular name for boys. Five years earlier, in 2020, it was 1,051st. It first appears in the records in 2004.
2025 had the most boys named Kaisen of any year since it first appeared, in 2004.
Half of all the boys named Kaisen in the US since 1880 were born between 2016 and 2023, the years shaded on the chart below.
In 2025, 1,879 boys in the US were given Kaisen or a name that sounds the same. With every name's spellings counted this way, that ranks #212, up from #800 for this spelling alone.
Kaisen in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 311 | #800 |
| 2024 | 261 | #902 |
| 2023 | 241 | #937 |
| 2022 | 254 | #908 |
| 2021 | 214 | #1,025 |
| 2020 | 192 | #1,051 |
| 2019 | 193 | #1,057 |
| 2018 | 143 | #1,282 |
| 2017 | 138 | #1,306 |
| 2016 | 152 | #1,229 |
| 2015 | 98 | #1,625 |
| 2014 | 88 | #1,714 |
| 2013 | 65 | #2,064 |
| 2012 | 59 | #2,208 |
| 2011 | 40 | #2,903 |
| 2010 | 47 | #2,578 |
| 2009 | 43 | #2,799 |
| 2008 | 32 | #3,419 |
| 2007 | 18 | #4,994 |
| 2006 | 16 | #5,299 |
| 2005 | 10 | #7,089 |
| 2004 | 10 | #6,970 |
Nicknames for Kaisen
- Kai 816 boys in the UK in 2025
Names like Kaisen
Names given in the same years and the same naming tradition, with a similar sound.
Kayden, Finn, Ronan, Kian, Rowan, Aiden, Lochlan, Eden, Brody, Callan, Cillian, Jayden
Other spellings of Kaisen
Kaison, Kyson, Kaisan, Kysen, Kycen, Khyson, Caisen, Khysen, Kysin
Names related to Kaisen
More Modern names
Ailany, Myla, Nevaeh, Jax, Indie, Miley, Raelynn, Kaiden, Kehlani, Alayna, Caden, Zayden, Wrenley, Mya, Oaklynn, Ailani
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Kaisen: name meaning, origin and popularity”, https://www.nameling.co.uk/names/kaisen, updated 20 October 2026.