Kaius
Boy · KY-us · Latin
Kaius is a boys' name of Latin origin, meaning “possibly to rejoice”. In 2025 it ranked 1,257th for boys in the UK (24 babies) and 1,028th for boys in the US (216 babies).
What does Kaius mean?
Latin: spelling of Caius, an old form of Roman Gaius
“possibly to rejoice”
Spelling of Caius, an old form of the Roman first name Gaius, borne by Julius Caesar and the emperor Caligula.
- Say it
- KY-us
Is Kaius a girl's or a boy's name?
Kaius is a boys' name. In 2025, it was given to 24 boys in the UK and 216 boys in the US. Too few girls were given it to be listed.
How popular is Kaius in the UK?
- Rank in 2025
- #1,257among boys
- Babies in 2025
- 24about 1 in 12,000 boys
- Five-year trend
- Risingup 32% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 24 boys in the UK were named Kaius, making it the 1,257th most popular name for boys. Five years earlier, in 2020, it was 1,356th. Its busiest year was 2022, with 28 boys.
Half of all the boys named Kaius in the UK since 1996 were born between 2015 and 2022, the years shaded on the chart below.
In 2025, 77 boys in the UK were given Kaius or a name that sounds the same. With every name's spellings counted this way, that ranks #521, up from #1,257 for this spelling alone.
Among boys in 2025, it was 1,196th in England and Wales.
Kaius in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 24 | #1,257 |
| 2024 | 22 | #1,311 |
| 2023 | 24 | #1,247 |
| 2022 | 28 | #1,115 |
| 2021 | 21 | #1,341 |
| 2020 | 20 | #1,356 |
| 2019 | 15 | #1,683 |
| 2018 | 18 | #1,486 |
| 2017 | 16 | #1,649 |
| 2016 | 13 | #1,909 |
| 2015 | 18 | #1,476 |
| 2014 | 11 | #2,054 |
| 2013 | 4 | #4,008 |
| 2012 | 5 | #3,572 |
| 2011 | 7 | #2,736 |
| 2010 | 8 | #2,534 |
| 2009 | 7 | #2,679 |
| 2008 | 4 | #3,836 |
| 2007 | 0 | – |
| 2006 | 5 | #3,013 |
| 2005 | 0 | – |
| 2004 | 1 | #4,870 |
| 2003 | 5 | #2,574 |
| 2002 | 4 | #2,751 |
| 2001 | 4 | #2,714 |
| 2000 | 5 | #2,237 |
How popular is Kaius in the US?
- Rank in 2025
- #1,028among boys
- Babies in 2025
- 216about 1 in 7,900 boys
- Five-year trend
- Steadyup 22% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 216 boys in the US were named Kaius, making it the 1,028th most popular name for boys. Five years earlier, in 2020, it was 1,023rd. It first appears in the records in 2005.
2025 had the most boys named Kaius of any year since it first appeared, in 2005.
Half of all the boys named Kaius in the US since 1880 were born between 2017 and 2023, the years shaded on the chart below.
In 2025, 475 boys in the US were given Kaius or a name that sounds the same. With every name's spellings counted this way, that ranks #583, up from #1,028 for this spelling alone.
- Caius 254
- Kaius 216
- Khaius 5
Kaius in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 216 | #1,028 |
| 2024 | 186 | #1,135 |
| 2023 | 189 | #1,118 |
| 2022 | 177 | #1,163 |
| 2021 | 180 | #1,131 |
| 2020 | 202 | #1,023 |
| 2019 | 169 | #1,152 |
| 2018 | 115 | #1,498 |
| 2017 | 94 | #1,681 |
| 2016 | 114 | #1,491 |
| 2015 | 110 | #1,502 |
| 2014 | 85 | #1,766 |
| 2013 | 45 | #2,621 |
| 2012 | 34 | #3,228 |
| 2011 | 27 | #3,790 |
| 2010 | 14 | #6,032 |
| 2009 | 15 | #5,796 |
| 2008 | 15 | #5,762 |
| 2007 | 10 | #7,586 |
| 2006 | 7 | #9,579 |
| 2005 | 7 | #9,108 |
Names like Kaius
Names given in the same years and the same naming tradition, with a similar sound.
Koa Kai Atlas Remy Albie Ozzy Kylo Huxley Kairo Alfie Finley Oakley
Other spellings of Kaius
Names related to Kaius
More Latin names
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