NameCensus.

UK boy's name

Caolan

A masculine Irish name meaning "slender" or "young warrior".

For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.

Caolan is a boy's name in the UK records. People looking for Caolan popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #1517, with 17 babies registered with the name. Its strongest year in the published records was 2023, with 22 births.

This profile covers 341 England and Wales registrations across 29 recorded years from 1996 to 2024. The figures come from ONS England and Wales, NRS Scotland and NISRA Northern Ireland, 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 77% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 1,979 living people in the UK are called Caolan. 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 2025 or 2026.

Key insights

  • Caolan ranked #1517 for boys in England and Wales in 2024, with 17 registrations.
  • The name peaked in 2023, when 22 boys were registered as Caolan.
  • Caolan ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #89 in 2024.
  • About 1,979 living people in the UK are estimated to have Caolan as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#1517

2024

Births in 2024

17

Latest year

Peak year

2023

22 births

Estimated living

1,979

2026

Meaning

What does Caolan mean?

The given name Caolan originates from Irish Gaelic and is believed to have its roots in the Old Irish word "caolán," meaning "slender" or "thin." This name has been in use in Ireland for centuries, particularly in the northern regions of the country.

Caolan is a masculine name, and its earliest recorded instances can be traced back to ancient Irish manuscripts and genealogical records from the Middle Ages. However, it is worth noting that spelling variations such as "Caoláin" and "Caoilín" were also common during this period.

While the name Caolan does not appear to have any direct references in religious scriptures or ancient texts, it has been borne by several notable individuals throughout Irish history. One of the earliest recorded figures with this name was Caolan Óg Ó Lochlainn, a 13th-century Irish chieftain and leader of the Ó Lochlainn dynasty in County Donegal.

In the 16th century, Caolan Ó Máille (born circa 1520) was a prominent Irish sailor and pirate who operated off the west coast of Ireland. His exploits and daring raids against English ships during the Tudor conquest of Ireland made him a legendary figure in Irish folklore.

Another notable bearer of the name was Caolan Mac Uidhir (1670-1726), a renowned Irish harpist and composer from County Fermanagh. His compositions and performances were instrumental in preserving and promoting traditional Irish music during a time of cultural suppression.

In the 19th century, Caolan Ó Raghallaigh (1828-1899) was a celebrated Irish language scholar, writer, and educator. He played a crucial role in the preservation and promotion of the Irish language through his publications and teaching efforts.

More recently, Caolan Madden (born 1976) is a contemporary Irish artist and sculptor known for his large-scale public installations and works that explore themes of identity, memory, and place.

While the name Caolan has deep roots in Irish history and culture, it has also gained popularity in recent times, particularly among those with Irish heritage or an appreciation for Celtic names. Its slender and melodic sound has contributed to its enduring appeal across generations.

Sourced from namecensus.com.

Popularity

Caolan over time

The chart below shows babies named Caolan registered in England and Wales in the years where the name appears in the published records, from 1996 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Caolan, the clearest high point is 2023. The latest England and Wales figure is 17 births in 2024, compared with 22 at the peak.

Babies born per year

Caolan
06111722199620102024

Decades

Caolan by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Caolan 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 #1583 80 5
2010s #2044 110 10
2000s #1745 100 10
1990s #1101 51 4

Geography

Where Caolan is most common

The bars show the latest published local birth counts for Caolan. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.

Caolan ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #89 in 2024.

Northern Ireland
26
Scotland
4

Across the UK

Caolan in Scotland and Northern Ireland

Scotland (NRS)

#619 in 2024

13 years of NRS records, 68 total registered

Northern Ireland (NISRA)

#89 in 2024

28 years of NISRA records, 1,586 total registered

Notable bearers

Famous people named Caolan

  • Caolan Mooney

    Australian rules football player; Gaelic football player

    Gaelic and Australian rules footballer

    1993-

  • Caolan McAleer

    association football player

    British footballer (born 1993)

    1993-

  • Caolan Lavery

    association football player

    Canadian / Northern Irish association football player

    1992-

Related

Names similar to Caolan

FAQ

Caolan: questions and answers

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

In 2024, Caolan was ranked #1517 for boys in England and Wales, with 17 births registered.

When was Caolan most popular?

The peak year on record was 2023, with 22 babies registered as Caolan in England and Wales.

What is the meaning and origin of Caolan?

A masculine Irish name meaning "slender" or "young warrior".

How many people are called Caolan in the UK?

A total of 341 babies have been registered as Caolan across the 29 years of ONS England & Wales records shown here, plus 68 more in Scotland and 1,586 in Northern Ireland.

Where is Caolan most common?

In the latest published local rankings, Caolan ranks best in Northern Ireland, where it placed #89 in 2024. The regional bars on this page use birth counts, so they also reflect the size of each region.

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.