The first name Caio
A boy’s name.
1 syllable Male
Popularity
Babies registered in England and Wales, 1996–2025
In 2025, 36 boys were named Caio, making it the 873rd most popular boys’ name. It peaked in 2022, with 43 births (#758).
Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Caio with other names.
Popularity in the United States
Babies named Caio at birth, 1880–2025
In 2025, 35 boys born in the United States were named Caio, the 3,322nd most popular boys’ name that year. It was used most in 2023, when 40 were.
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Famous people named Caio
18 on Wikidata, most written-about first
- Caio LucasEmirati association football player, born 1994
- Caio JúniorBrazilian association football player and manager (1965–2016)
- Caio HenriqueBrazilian association football player, born 1997
- Caio CanedoBrazilian and Emirati association football player, born 1990
- Caio AlvesBrazilian footballer, born 1986
- Caio BlatBrazilian actor, born 1980
- Caio CésarBrazilian association football player, born 1995
- Caio RibeiroBrazilian footballer and manager, born 1975
- Caio ColletBrazilian racing driver, born 2002
- Caio Fernando AbreuBrazilian writer (1948–1996)
- Caio Balsamo GardimBrazilian association football player, born 1992
- Caio CastroBrazilian actor, born 1989
Questions
- How popular is the name Caio?
- In 2025, 36 boys born in England and Wales were named Caio, ranking 873rd. Its peak was 2022, with 43 births.
- Is Caio a boy's or a girl's name?
- Mostly a boy's name: 100% of the 722 US babies named Caio since 1880 were boys.
- When was Caio most popular?
- 2023 in the United States, when 40 babies were named Caio, its highest rank at 3,067th.