Kaio is a rare variant of Kai that has climbed to its highest level yet, peaking in 2023.
Kaio is a boy name. In 2025 it ranked #4,619 for boy births in the United States (and #9,792 across all names), given to 22 babies. Kaio first appears in 1993 and peaked in 2023 (26 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 22 | 22 | #4,619 |
| 2024 | 26 | 26 | #4,139 |
| 2023 | 26 | 26 | #4,166 |
| 2022 | 17 | 17 | #5,535 |
| 2021 | 19 | 19 | #5,022 |
| 2020 | 18 | 18 | #5,138 |
| 2019 | 18 | 18 | #5,253 |
| 2018 | 20 | 20 | #4,841 |
| 2017 | 13 | 13 | #6,491 |
| 2016 | 15 | 15 | #5,918 |
| 2015 | 9 | 9 | #8,373 |
| 2014 | 19 | 19 | #4,973 |
| 2013 | 21 | 21 | #4,535 |
| 2012 | 16 | 16 | #5,599 |
| 2011 | 15 | 15 | #5,816 |
| 2010 | 21 | 21 | #4,600 |
| 2009 | 22 | 22 | #4,505 |
| 2008 | 23 | 23 | #4,329 |
| 2007 | 13 | 13 | #6,448 |
| 2006 | 11 | 11 | #7,178 |
| 2005 | 14 | 14 | #5,729 |
| 2004 | 8 | 8 | #8,527 |
| 2003 | 11 | 11 | #6,493 |
| 2002 | 8 | 8 | #8,052 |
| 2001 | 5 | 5 | #11,462 |
| 1998 | 5 | 5 | #10,454 |
| 1996 | 9 | — | #6,250 |
| 1993 | 5 | — | #9,454 |