NameCensus.

UK boy's name

Kayo

A feminine Japanese name meaning "victorious one" or "successful child".

For 2026, the newest official UK baby-name figures on this page are from 2023. That release is the current official benchmark rather than a forecast.

Kayo is a boy's name in the UK records. People looking for Kayo popularity in 2026 should use the latest official release, which is 2023 in this profile. In that release it ranked #4991, with 3 babies registered with the name. Its strongest year in the published records was 2009, with 4 births.

This profile covers 20 England and Wales registrations across 6 recorded years from 2003 to 2023. 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 75% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 20 living people in the UK are called Kayo. 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 2024 or 2026.

Key insights

  • Kayo ranked #4991 for boys in England and Wales in 2023, with 3 registrations.
  • The name peaked in 2009, when 4 boys were registered as Kayo.
  • About 20 living people in the UK are estimated to have Kayo as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#4991

2023

Births in 2023

3

Latest year

Peak year

2009

4 births

Estimated living

20

2026

Meaning

What does Kayo mean?

The name Kayo is a Japanese given name with origins dating back to the Nara period (710-794 AD). It is derived from the Japanese word "kayo," which means "song" or "melody." The name was initially given to children born into families of musicians or poets.

In the 8th century, Kayo was the name of a renowned Japanese court musician who served under the Emperor Shomu. Her skills as a performer and composer were highly praised, and her name became associated with musical excellence.

The name Kayo also appears in the "Manyoshu," the oldest existing collection of Japanese poetry, compiled in the 8th century. Several poems in this anthology are attributed to individuals named Kayo, suggesting the name's popularity during that era.

One of the earliest recorded examples of the name Kayo is Kayo no Sukezane, a Japanese nobleman who lived in the late 12th century. He was a prominent figure in the Kamakura shogunate and served as a diplomacy envoy.

In the 16th century, Kayo Hiraga was a renowned calligrapher and artist who contributed to the development of the Japanese calligraphic style known as "Hiragana."

During the Edo period (1603-1868), Kayo Inoue was a notable samurai and daimyo (feudal lord) who ruled over the Aizu domain.

In the 19th century, Kayo Nakai was a pioneering Japanese educator who founded one of the country's first modern schools for girls.

Another historical figure with the name Kayo was Kayo Murayama, a Japanese philosopher and educator who lived from 1891 to 1952. He played a significant role in the introduction of Western philosophy to Japan.

Sourced from namecensus.com.

Popularity

Kayo over time

The chart below shows babies named Kayo registered in England and Wales in the years where the name appears in the published records, from 2003 to 2023. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Kayo, the clearest high point is 2009. The latest England and Wales figure is 3 births in 2023, compared with 4 at the peak.

Babies born per year

Kayo
01234200320132023

Decades

Kayo by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Kayo 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 #4533 10 3
2010s #4702 3 1
2000s #3606 7 2

Related

Names similar to Kayo

FAQ

Kayo: questions and answers

How popular is the name Kayo in the UK right now?

In 2023, Kayo was ranked #4991 for boys in England and Wales, with 3 births registered.

When was Kayo most popular?

The peak year on record was 2009, with 4 babies registered as Kayo in England and Wales.

What is the meaning and origin of Kayo?

A feminine Japanese name meaning "victorious one" or "successful child".

How many people are called Kayo in the UK?

A total of 20 babies have been registered as Kayo across the 6 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.