UK boy's name
Cayo
Meaning "guide" in the Spanish language.
For 2026, the newest official UK baby-name figures on this page are from 2020. That release is the current official benchmark rather than a forecast.
Cayo is a boy's name in the UK records. People looking for Cayo popularity in 2026 should use the latest official release, which is 2020 in this profile. In that release it ranked #3848, with 4 babies registered with the name. Its strongest year in the published records was 2019, with 4 births.
This profile covers 14 England and Wales registrations across 4 recorded years from 2006 to 2020. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.
The latest count is about 100% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 14 living people in the UK are called Cayo. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2021 or 2026.
Key insights
- • Cayo ranked #3848 for boys in England and Wales in 2020, with 4 registrations.
- • The name peaked in 2019, when 4 boys were registered as Cayo.
- • About 14 living people in the UK are estimated to have Cayo as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#3848
2020
Births in 2020
4
Latest year
Peak year
2019
4 births
Estimated living
14
2026
Meaning
What does Cayo mean?
The name Cayo has its origins in the Latin language. It is derived from the Latin word "cavea," which means "pit" or "hollow." This name's earliest roots can be traced back to ancient Rome, where it was likely used as a nickname or cognomen (a descriptive name added to one's given name).
In ancient Roman texts and historical records, the name Cayo is sometimes mentioned. One notable example is Cayo Sulpicio Galo, a Roman general and politician from the 1st century BC. He played a significant role in the Roman conquest of Gaul and was a contemporary of Julius Caesar.
Another historical figure bearing the name Cayo was Cayo Servilio Ahala, a Roman consul and military leader who lived in the 5th century BC. He is known for executing the Roman nobleman Spurius Maelius, who was accused of attempting to become a king.
In the realm of literature, the name Cayo appears in some ancient Roman works. For instance, Cayo Lucio Cesar, a character in the play "La Vida es Sueño" (Life is a Dream) by the renowned Spanish playwright Pedro Calderón de la Barca (1600-1681), bears this name.
Moving forward in history, we find Cayo Duilio, an ancient Roman naval commander from the 3rd century BC. He is celebrated for his victory over the Carthaginians in the Battle of Mylae during the First Punic War, which marked the first significant Roman naval triumph.
Another notable figure with the name Cayo was Cayo Plinio Segundo, better known as Pliny the Elder (23-79 AD). He was a Roman author, naturalist, and philosopher who wrote the encyclopedic work "Naturalis Historia" (Natural History), which became an influential source of information in the Middle Ages.
These are just a few examples of historical figures who bore the name Cayo, demonstrating its longstanding presence in the Latin language and Roman culture. While its popularity may have waxed and waned over the centuries, the name Cayo has left an indelible mark on the annals of history.
Sourced from namecensus.com.
Popularity
Cayo over time
The chart below shows babies named Cayo registered in England and Wales in the years where the name appears in the published records, from 2006 to 2020. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Cayo, the clearest high point is 2019. The latest England and Wales figure is 4 births in 2020, compared with 4 at the peak.
Babies born per year
Decades
Cayo by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Cayo was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.
| Decade | Average rank | Total births | Years covered |
|---|---|---|---|
| 2020s | #3848 | 4 | 1 |
| 2010s | #3937 | 4 | 1 |
| 2000s | #4193 | 6 | 2 |
Related
Names similar to Cayo
- Charlie 104,761
- Callum 65,796
- Connor 53,072
- Cameron 40,394
- Charles 33,091
- Christopher 26,849
- Caleb 15,553
- Corey 12,622
- Carter 11,505
- Cody 11,075
- Conor 10,298
- Christian 9,695
FAQ
Cayo: questions and answers
How popular is the name Cayo in the UK right now?
In 2020, Cayo was ranked #3848 for boys in England and Wales, with 4 births registered.
When was Cayo most popular?
The peak year on record was 2019, with 4 babies registered as Cayo in England and Wales.
What is the meaning and origin of Cayo?
Meaning "guide" in the Spanish language.
How many people are called Cayo in the UK?
A total of 14 babies have been registered as Cayo across the 4 years of ONS England & Wales records shown here.
Which records is this page based on?
The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.