boy's name
Caio
- Origin Latin
- Gender Boy
- Letters 4
- Popularity Uncommon
- Births on record 1,364
Ireland
#768
2024 births
Caio is a boy's name. In 2025 it was given to 35 babies in the United States. It is used consistently but remains uncommon.
- Caio is a name of Latin origin.
- Peaked in 2023, when 40 babies were given the name.
- Its usage has held steady over the past decade.
- Today about 1 in 94,733 babies in the United States is given this name.
- First appears in US birth records in 1990.
Caio over time
Births per decade in the United States, 1990s 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 |
|---|---|
| 1990s | 73 |
| 2000s | 209 |
| 2010s | 250 |
| 2020s (to 2025) | 190 |
How popular is Caio?
In 2025, Caio was given to 35 babies in the United States. It is used consistently but remains uncommon.
Where Caio 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 Caio
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Caio also like
Names whose popularity has risen and fallen in step with Caio over the last century — the same taste, a different name.
Caio in other languages
The same name as it is spelled elsewhere — not shortenings, and not different names that merely sound alike. Each one has its own record here.
- Latin
- Gaius
Sibling names for Caio
Names from the same era that won't rhyme or share an initial with Caio — the two things that make a sibling set grate.
Common questions about Caio
How popular is the name Caio?
In 2025, Caio was given to 35 babies in the United States. It is used consistently but remains uncommon.
Is Caio a girl's or a boy's name?
Caio is given almost entirely to boys in birth records.
When was Caio most popular?
Caio peaked in 2023, when 40 babies were given the name. Its usage has held steady over the past decade.
Is Caio a good name?
That is not something records can settle, but they can tell you what you would be choosing. Caio currently ranks #894 in the United States. Its usage has held steady over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.