boy's name
Kaius
- Origin Latin
- Gender Boy
- Letters 5
- Popularity Uncommon
- Births on record 2,618
Ireland
#742
2021 births
Kaius is a boy's name. In 2025 it was given to 216 babies in the United States. It is used consistently but remains uncommon.
- Kaius is a name of Latin origin.
- Peaked in 2025, when 216 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 15,349 babies in the United States is given this name.
- First appears in US birth records in 2005.
Kaius over time
Births per decade in the United States, 2000s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 2000s | 54 |
| 2010s | 807 |
| 2020s (to 2025) | 1,150 |
How popular is Kaius?
In 2025, Kaius was given to 216 babies in the United States. It is used consistently but remains uncommon.
Where Kaius is used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names that peaked alongside Kaius
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Kaius also like
Names whose popularity has risen and fallen in step with Kaius over the last century — the same taste, a different name.
Sibling names for Kaius
Names from the same era that won't rhyme or share an initial with Kaius — the two things that make a sibling set grate.
Common questions about Kaius
How popular is the name Kaius?
In 2025, Kaius was given to 216 babies in the United States. It is used consistently but remains uncommon.
Is Kaius a girl's or a boy's name?
Kaius is given almost entirely to boys in birth records.
When was Kaius most popular?
Kaius peaked in 2025, when 216 babies were given the name. It has been rising over the past decade.
Is Kaius a good name?
That is not something records can settle, but they can tell you what you would be choosing. Kaius currently ranks #1,029 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.