Caio is a distinctive choice, ranked #873 in 2025. Your child is likely to be the only Caio in their class.
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UK Rank 2025
#873
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About the Name Caio
Caio is steadily gaining in popularity, up 35 places over the past five years. Its best recorded rank was #758 in 2022, and it currently sits at #1076. The name has been a consistent presence in UK records since 1996.
Caio is uncommon in the UK, so your child is very likely to be the only Caio in their class.
⭐ Famous People Named Caio
Caio da Silveira — Caio César Franco da Silveira, commonly known as Caio Silveira is a Brazilian former professional basketball player.
Caio Monteiro — Caio Monteiro Costa, commonly known as Caio Monteiro, is a Brazilian footballer who plays as a forward for Nova Venécia.
Caio Eduardo de Mello Cazziolato — Caio Eduardo de Mello Cazziolato, also commonly known as Caio Cazziolato, or simply as "Caio" is a Brazilian former professional basketball player.
Biographical summaries are shortened from Wikipedia and are used under the CC BY-SA 4.0 licence; those summaries remain available under that same licence.
Frequently Asked Questions
Common questions about the name Caio
Unlikely. With around 36 UK babies named Caio per year, your child will almost certainly be the only Caio in their class, and possibly the only one in the whole school.
Caio is rising: up 238 places since 2020, to #873 in 2025. Its best recorded position was #758 in 2022.
Caio is a distinctive choice sitting outside the mainstream UK top names. Parents choosing less common names often find their children appreciate the individuality as they grow up, rarely needing to add an initial to distinguish themselves.
Notable people named Caio include: Caio da Silveira, Caio Monteiro and Caio Eduardo de Mello Cazziolato. Short summaries for each appear below.
Caio does not appear in the US top 1,000 baby names, making it a distinctively British choice — your child is unlikely to encounter American Caios in the wild.
36
UK babies named Caio (2025)
< 1
Expected classmates with this name (class of 28)
~0.0
In a school of 600
↑ 238 places
Rank change (last 5 years)
🏫 Who else is in the room?
In a typical UK class of 28, highlighted children share the name Caio
Almost certainly the only Caio in the class
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UK Popularity (1996–2025)
Rank and birth count · ONS official data
No US data available for this name
✨ Similar names to Caio
Names with a similar style — each with their own classroom story
Caio Takeo Kumahara, commonly known as Caio Japa, is a Brazilian futsal player of Japanese descent who plays for Maritime Augusta in the Italian Serie A.
Caio Túlio Costa is a Brazilian journalist, professor of journalism, PhD in communication at the University of São Paulo and visiting research fellow at Columbia University.