Kajus
Boy · KY-us · Latin
Kajus is a boys' name of Latin origin, meaning “possibly to rejoice”. In 2025 it ranked 1,473rd for boys in the UK (19 babies).
What does Kajus mean?
Latin: Lithuanian and Polish form of Gaius
“possibly to rejoice”
Lithuanian and Polish form of the Roman first name Gaius (Caius), borne by Julius Caesar.
- Say it
- KY-us
Is Kajus a girl's or a boy's name?
Kajus is a boys' name. In 2025, it was given to 19 boys in the UK. Too few girls were given it to be listed.
How popular is Kajus in the UK?
- Rank in 2025
- #1,473among boys
- Babies in 2025
- 19about 1 in 16,000 boys
- Five-year trend
- Falling fastdown 62% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 19 boys in the UK were named Kajus, making it the 1,473rd most popular name for boys. Five years earlier, in 2020, it was 876th. Its busiest year was 2013, with 63 boys.
Half of all the boys named Kajus in the UK since 1996 were born between 2011 and 2018, the years shaded on the chart below.
In 2025, 77 boys in the UK were given Kajus or a name that sounds the same. With every name's spellings counted this way, that ranks #521, up from #1,473 for this spelling alone.
Among boys in 2025, it was 1,405th in England and Wales.
Kajus in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 19 | #1,473 |
| 2024 | 11 | #2,149 |
| 2023 | 21 | #1,355 |
| 2022 | 26 | #1,157 |
| 2021 | 33 | #993 |
| 2020 | 37 | #876 |
| 2019 | 54 | #699 |
| 2018 | 43 | #826 |
| 2017 | 54 | #717 |
| 2016 | 57 | #683 |
| 2015 | 59 | #662 |
| 2014 | 53 | #696 |
| 2013 | 63 | #617 |
| 2012 | 59 | #648 |
| 2011 | 51 | #701 |
| 2010 | 54 | #658 |
| 2009 | 46 | #725 |
| 2008 | 31 | #947 |
| 2007 | 24 | #1,102 |
| 2006 | 17 | #1,302 |
| 2005 | 9 | #1,957 |
| 2004 | 6 | #2,399 |
Names like Kajus
Names given in the same years and the same naming tradition, with a similar sound.
Leo Ollie Austin Lucas Roman Vinnie Felix Ayaan Noah Vincent Oscar Freddie
Other spellings of Kajus
More Latin names
Oliver Olivia Aurora Emily Florence Mabel Luna Nora Rosie Emilia Max Nova Lucy Julian Clara Anthony