Meaning & origin
The story
Published U.S. birth records include this spelling as early as 2004. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Kajus through the years
- Babies since 1880
- 17
- 17 boys · 0 girls
- Most popular year
- 2004
- 6 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
The most recent published U.S. birth count for boys is 5 in 2019. Later missing counts do not mean the name went unused.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Kajus’s family of names
In German usage, Kajus has a related form in CAJUS. In Polish usage, Kajus has a conventional equivalent in the Russian form Кай.
Inner ring: nicknames and forms · outer: across languages.
Nicknames & forms 1
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 2
Equivalents and cognates in other languages, plus older forms it grew from.
See also 3
Names our sources mention alongside this one. They are related in story or meaning, not forms of this name.
Similar names
If you love Kajus, these share its style, era, origin or sound, from outside its own family.
Nojus
Nojus is a masculine given name. It is used in Lithuanian.
>99% boys
Kacper
Kacper is a masculine given name. It is used in Polish.
>99% boys
Luukas
Luukas is a masculine given name from Latin, ultimately from Ancient Greek. It is used in Finnish and Estonian.
>99% boys
Kastor
Kastor is a given name from Latin. It is used in Polish.
>99% boys
Sesar
Sesar is a masculine given name from Latin. It is used in Icelandic.
>99% boys
Carpenter
“one who makes carriages”
>99% boys
Ieuan
“God is gracious”
>99% boys
Brais
Brais is a masculine given name from Latin. It is used in Galician.
>99% boys