UK girl's name
Caitlain
A feminine name of Irish origin meaning "mighty" or "pure".
For 2026, the newest official UK baby-name figures on this page are from 2007. That release is the current official benchmark rather than a forecast.
Caitlain is a girl's name in the UK records. People looking for Caitlain popularity in 2026 should use the latest official release, which is 2007 in this profile. In that release it ranked #4294, with 4 babies registered with the name. Its strongest year in the published records was 1998, with 10 births.
This profile covers 71 England and Wales registrations across 11 recorded years from 1997 to 2007. The figures come from ONS England and Wales 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 40% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 75 living people in the UK are called Caitlain. 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 2008 or 2026.
Key insights
- • Caitlain ranked #4294 for girls in England and Wales in 2007, with 4 registrations.
- • The name peaked in 1998, when 10 girls were registered as Caitlain.
- • Caitlain ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #293 in 2001.
- • About 75 living people in the UK are estimated to have Caitlain as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4294
2007
Births in 2007
4
Latest year
Peak year
1998
10 births
Estimated living
75
2026
Meaning
What does Caitlain mean?
The name Caitlain is derived from the Irish Caitlín, which is a diminutive form of the Gaelic name Caitríona. Caitríona is believed to have originated from the Greek name Catarina, which means "pure" or "clear."
The name Caitlain first appeared in Ireland during the medieval period, around the 12th or 13th century. It was a popular name among Irish families, particularly those with strong cultural roots and ties to the Gaelic language and traditions.
One of the earliest recorded instances of the name Caitlain can be found in the Book of Leinster, a medieval Irish manuscript dating back to the 12th century. In this manuscript, the name appears in various spellings, including Caitlín, Caitlíne, and Caitlaine.
Throughout history, several notable individuals have borne the name Caitlain. One of the earliest examples is Caitlain Ní Mhaonaigh, an Irish noblewoman and poet who lived in the 16th century. Another prominent figure was Caitlain Ní Dhubhda, a renowned Irish harpist and composer from the 17th century.
In the 18th century, Caitlain Ní Uallacháin was a celebrated Irish musician and singer who contributed significantly to the preservation of traditional Irish music and songs. Another notable Caitlain from this period was Caitlain Ní Chualáin, a renowned Irish scholar and teacher.
Moving into the 19th century, Caitlain Ní Shúilleabháin (1798-1874) was an Irish folklore collector and author who played a vital role in preserving and documenting Irish oral traditions and storytelling.
While the name Caitlain has its roots in Ireland, it has gained popularity in other parts of the world as well. Over the centuries, variations of the name, such as Caitlin, Katelyn, and Kaitlyn, have emerged and found their way into different cultures and languages.
Sourced from namecensus.com.
Popularity
Caitlain over time
The chart below shows babies named Caitlain registered in England and Wales in the years where the name appears in the published records, from 1997 to 2007. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Caitlain, the clearest high point is 1998. The latest England and Wales figure is 4 births in 2007, compared with 10 at the peak.
Babies born per year
Decades
Caitlain by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Caitlain 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 |
|---|---|---|---|
| 2000s | #2871 | 53 | 8 |
| 1990s | #2764 | 18 | 3 |
Geography
Where Caitlain is most common
The bars show the latest published local birth counts for Caitlain. 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.
Caitlain ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #293 in 2001.
Across the UK
Caitlain in Scotland and Northern Ireland
Northern Ireland (NISRA)
#293 in 2001
1 years of NISRA records, 4 total registered
Related
Names similar to Caitlain
- Chloe 111,265
- Charlotte 88,733
- Caitlin 28,931
- Courtney 23,162
- Chelsea 13,049
- Clara 9,435
- Connie 8,402
- Catherine 8,376
- Charlie 7,964
- Cerys 7,506
- Casey 7,018
- Cara 6,375
FAQ
Caitlain: questions and answers
How popular is the name Caitlain in the UK right now?
In 2007, Caitlain was ranked #4294 for girls in England and Wales, with 4 births registered.
When was Caitlain most popular?
The peak year on record was 1998, with 10 babies registered as Caitlain in England and Wales.
What is the meaning and origin of Caitlain?
A feminine name of Irish origin meaning "mighty" or "pure".
How many people are called Caitlain in the UK?
A total of 71 babies have been registered as Caitlain across the 11 years of ONS England & Wales records shown here and 4 in Northern Ireland.
Where is Caitlain most common?
In the latest published local rankings, Caitlain ranks best in Northern Ireland, where it placed #293 in 2001. 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.