Kaii
Boy · KY · Hawaiian
Kaii is a boys' name of Hawaiian origin, meaning “sea”. In 2025 it ranked 8,239th for boys in the US (9 babies).
What does Kaii mean?
Hawaiian: spelling of Kai; Hawaiian, but also an independent Scandinavian, Frisian and Welsh name
“sea”
Has several independent sources: Hawaiian kai, sea; a Frisian and Scandinavian name; and Welsh Cai, Sir Kay of Arthurian legend.
- Say it
- KY
Meaning borrowed from Kai. More on Wiktionary.
Is Kaii a girl's or a boy's name?
Kaii is a boys' name. In 2025, it was given to 9 boys in the US. Too few girls were given it to be listed.
How popular is Kaii in the UK?
No boys in the UK were given it in 2025, or too few to be listed. Its busiest year was 2010, with 5 boys.
Kaii in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2023 | 1 | #6,556 |
| 2022 | 1 | #6,413 |
| 2021 | 0 | – |
| 2020 | 1 | #6,143 |
| 2019 | 3 | #4,913 |
| 2018 | 0 | – |
| 2017 | 0 | – |
| 2016 | 4 | #4,214 |
| 2015 | 5 | #3,527 |
| 2014 | 4 | #4,063 |
| 2013 | 1 | #6,198 |
| 2012 | 1 | #6,332 |
| 2011 | 0 | – |
| 2010 | 5 | #3,478 |
| 2009 | 3 | #4,691 |
| 2008 | 0 | – |
| 2007 | 0 | – |
| 2006 | 2 | #5,314 |
| 2005 | 3 | #3,992 |
| 2004 | 0 | – |
| 2003 | 1 | #4,616 |
| 2002 | 0 | – |
| 2001 | 0 | – |
| 2000 | 0 | – |
| 1999 | 0 | – |
| 1998 | 0 | – |
| 1997 | 3 | #2,979 |
How popular is Kaii in the US?
- Rank in 2025
- #8,239among boys
- Babies in 2025
- 9about 1 in 190,000 boys
- Five-year trend
- Too rare to calltoo few babies to tell
- Same name in a class
- under 1%chance among 15 boys
In 2025, 9 boys in the US were named Kaii, making it the 8,239th most popular name for boys. Five years earlier, in 2020, it was 9,548th. Its busiest year was 2023, with 17 boys. It first appears in the records in 2001.
Half of all the boys named Kaii in the US since 1880 were born between 2018 and 2023, the years shaded on the chart below.
In 2025, 4,193 boys in the US were given Kaii or a name that sounds the same. With every name's spellings counted this way, that ranks #90, up from #8,239 for this spelling alone.
Kaii in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 9 | #8,239 |
| 2024 | 8 | #8,982 |
| 2023 | 17 | #5,465 |
| 2022 | 13 | #6,473 |
| 2021 | 8 | #8,820 |
| 2020 | 7 | #9,548 |
| 2019 | 12 | #6,772 |
| 2018 | 12 | #6,699 |
| 2017 | 0 | – |
| 2016 | 6 | #10,739 |
| 2015 | 6 | #10,638 |
| 2014 | 5 | #12,102 |
| 2013 | 5 | #12,129 |
| 2012 | 0 | – |
| 2011 | 0 | – |
| 2010 | 0 | – |
| 2009 | 0 | – |
| 2008 | 0 | – |
| 2007 | 0 | – |
| 2006 | 0 | – |
| 2005 | 0 | – |
| 2004 | 0 | – |
| 2003 | 0 | – |
| 2002 | 0 | – |
| 2001 | 5 | #10,548 |
Names like Kaii
Names given in the same years and the same naming tradition, with a similar sound.
Kai Koa Keanu Makai Lawi Kane Nikolai Ozzy Huxley Lux Alfie Kairo
Other spellings of Kaii
Names related to Kaii
More Hawaiian names
Leilani Kailani Kalani Nalani Koah Meilani Kailany Leilany Laylani Kaleo Lani Luana Leylani Lailani Makoa Nakoa