Kaisen is an uncommon variant of Kayson that has climbed to its highest level yet, peaking in 2025.
Kaisen is predominantly a boy name. In 2025 it ranked #800 for boy births in the United States (and #1,646 across all names), given to 311 babies. Kaisen first appears in 2004 and peaked in 2025 (311 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 311 | 311 | — | #800 |
| 2024 | 267 | 267 | #14,301 | #902 |
| 2023 | 241 | 241 | — | #937 |
| 2022 | 254 | 254 | — | #910 |
| 2021 | 214 | 214 | — | #1,026 |
| 2020 | 192 | 192 | — | #1,052 |
| 2019 | 193 | 193 | — | #1,059 |
| 2018 | 143 | 143 | — | #1,287 |
| 2017 | 138 | 138 | — | #1,309 |
| 2016 | 152 | 152 | — | #1,230 |
| 2015 | 98 | 98 | — | #1,633 |
| 2014 | 94 | 94 | #15,550 | #1,722 |
| 2013 | 65 | 65 | — | #2,078 |
| 2012 | 59 | 59 | — | #2,223 |
| 2011 | 40 | 40 | — | #2,927 |
| 2010 | 47 | 47 | — | #2,606 |
| 2009 | 43 | 43 | — | #2,822 |
| 2008 | 32 | 32 | — | #3,459 |
| 2007 | 18 | 18 | — | #5,110 |
| 2006 | 16 | 16 | — | #5,422 |
| 2005 | 10 | 10 | — | #7,398 |
| 2004 | 10 | 10 | — | #7,268 |