girl's name

Caoilinn

KEE-lin (Irish)

  • Gender Girl
  • Syllables 2
  • Letters 8
  • Popularity Top 1000 (Ireland)
  • Births on record 292

Ireland

#578

2025 births

Caoilinn is a girl's name with 2 syllables. In 2016 it was given to 6 babies in the United States. It ranks among the top 1,000 names in Ireland.

  • Peaked in Ireland in 2013, when 21 babies were given the name.
  • It has been falling over the past decade in Ireland.
  • Today about 1 in 7,476 babies in Ireland is given this name.
  • First appears in birth records in 1994.
  • 2 syllables, with the stress on syllable 1.

Caoilinn Over Time

Births per decade in Ireland, 1990s to 2020s. The striped bar is the 2020s, which so far covers 2020 to 2025.

101
'90 '00 '10 '20
Show the numbers
Births named Caoilinn by decade in Ireland
Decade Births
1990s 15
2000s 90
2010s 101
2020s (to 2025) 34

How Popular Is Caoilinn?

In 2025, Caoilinn was given to 6 babies in Ireland, ranking #578 that year. It ranks among the top 1,000 names in Ireland.

Where Caoilinn Is Used

Ireland #578 6 in 2025
England & Wales #6,652 3 in 2021
United States #15,193 6 in 2016

The bar shows how near the top of each country's list the name sits, on a scale where #1 fills the row and #1,000 is a sliver. The figures beside it are the real rank and the babies recorded that year.

Irish figures withhold any name given to fewer than three babies in a year, so a gap means the name fell below that floor rather than went unused. The Central Statistics Office began recording the síneadh fada in 2018, so accented and unaccented spellings are counted separately from that year on. Data & sources.

Names That Peaked Alongside Caoilinn

These names rose and fell in the same era, which is why they tend to sound like they belong together.

Parents Who Like Caoilinn Also Like

Names whose popularity has risen and fallen in step with Caoilinn over the last century — the same taste, a different name.

How to Say Caoilinn

  • Irish KEE-lin

Sibling Names for Caoilinn

Names from the same era that do not rhyme or share an initial with Caoilinn — the two things that make a sibling set grate.

Common Questions About Caoilinn

How popular is the name Caoilinn?

In 2025, Caoilinn was given to 6 babies in Ireland, ranking #578 that year. It ranks among the top 1,000 names in Ireland.

Is Caoilinn a girl's or a boy's name?

Caoilinn is given almost entirely to girls in birth records.

How many syllables are in Caoilinn?

Caoilinn has 2 syllables.

When was Caoilinn most popular?

Caoilinn peaked in 2013, when 21 babies were given the name. It has been falling over the past decade.

Is Caoilinn a good name?

That is not something records can settle, but they can tell you what you would be choosing. Caoilinn currently ranks #578 in Ireland. It has been falling over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.