Caio
Boy · KY-oh · Latin
Caio is a boys' name of Latin origin. In 2025 it ranked 936th for boys in the UK (36 babies) and 3,313th for boys in the US (35 babies).
Where does Caio come from?
Latin: Portuguese and Italian form of Gaius
- Say it
- KY-oh
Is Caio a girl's or a boy's name?
Caio is a boys' name. In 2025, it was given to 36 boys in the UK and 35 boys in the US. Too few girls were given it to be listed.
How popular is Caio in the UK?
- Rank in 2025
- #936among boys
- Babies in 2025
- 36about 1 in 8,300 boys
- Five-year trend
- Risingup 25% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 36 boys in the UK were named Caio, making it the 936th most popular name for boys. Five years earlier, in 2020, it was 1,206th. Its busiest year was 2022, with 43 boys.
Half of all the boys named Caio in the UK since 1996 were born between 2011 and 2021, the years shaded on the chart below.
In 2025, 53 boys in the UK were given Caio or a name that sounds the same. With every name's spellings counted this way, that ranks #655, up from #936 for this spelling alone.
Among boys in 2025, it was 873rd in England and Wales.
Caio in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 36 | #936 |
| 2024 | 27 | #1,137 |
| 2023 | 33 | #1,008 |
| 2022 | 43 | #813 |
| 2021 | 28 | #1,110 |
| 2020 | 24 | #1,206 |
| 2019 | 22 | #1,261 |
| 2018 | 31 | #1,017 |
| 2017 | 27 | #1,141 |
| 2016 | 32 | #1,010 |
| 2015 | 27 | #1,112 |
| 2014 | 32 | #991 |
| 2013 | 31 | #1,002 |
| 2012 | 26 | #1,128 |
| 2011 | 31 | #993 |
| 2010 | 20 | #1,342 |
| 2009 | 21 | #1,254 |
| 2008 | 21 | #1,249 |
| 2007 | 18 | #1,343 |
| 2006 | 17 | #1,302 |
| 2005 | 8 | #2,090 |
| 2004 | 5 | #2,691 |
| 2003 | 8 | #1,880 |
| 2002 | 4 | #2,751 |
| 2001 | 5 | #2,326 |
| 2000 | 6 | #1,977 |
| 1999 | 3 | #3,043 |
| 1998 | 3 | #3,021 |
| 1997 | 1 | #3,857 |
| 1996 | 5 | #2,094 |
How popular is Caio in the US?
- Rank in 2025
- #3,313among boys
- Babies in 2025
- 35about 1 in 49,000 boys
- Five-year trend
- Steadyup 17% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 35 boys in the US were named Caio, making it the 3,313th most popular name for boys. Five years earlier, in 2020, it was 4,137th. Its busiest year was 2023, with 40 boys. It first appears in the records in 1990.
Half of all the boys named Caio in the US since 1880 were born between 2006 and 2020, the years shaded on the chart below.
In 2025, 68 boys in the US were given Caio or a name that sounds the same. With every name's spellings counted this way, that ranks #1,850, up from #3,313 for this spelling alone.
Caio in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 35 | #3,313 |
| 2024 | 30 | #3,691 |
| 2023 | 40 | #3,053 |
| 2022 | 29 | #3,772 |
| 2021 | 32 | #3,494 |
| 2020 | 24 | #4,137 |
| 2019 | 34 | #3,344 |
| 2018 | 32 | #3,442 |
| 2017 | 24 | #4,220 |
| 2016 | 11 | #7,152 |
| 2015 | 23 | #4,293 |
| 2014 | 21 | #4,534 |
| 2013 | 29 | #3,580 |
| 2012 | 25 | #4,000 |
| 2011 | 21 | #4,507 |
| 2010 | 30 | #3,530 |
| 2009 | 31 | #3,474 |
| 2008 | 31 | #3,483 |
| 2007 | 32 | #3,377 |
| 2006 | 28 | #3,600 |
| 2005 | 23 | #3,937 |
| 2004 | 16 | #5,002 |
| 2003 | 15 | #5,030 |
| 2002 | 16 | #4,697 |
| 2001 | 6 | #9,236 |
| 2000 | 11 | #5,913 |
| 1999 | 12 | #5,311 |
| 1998 | 7 | #7,553 |
| 1997 | 5 | #9,259 |
| 1996 | 7 | #7,129 |
| 1995 | 11 | #5,118 |
| 1994 | 6 | #7,764 |
| 1993 | 8 | #6,221 |
| 1992 | 6 | #7,414 |
| 1991 | 5 | #8,228 |
| 1990 | 6 | #7,171 |
Names like Caio
Names given in the same years and the same naming tradition, with a similar sound.
Luca Cooper Rio Enzo Carter Nico Arlo Ezra Remy Romeo Cruz Milo
Other spellings of Caio
Names related to Caio
More Latin names
Oliver Olivia Leo Roman Aurora Emily Florence Mabel Luna Nora Rosie Emilia Max Nova Lucy Julian