Caithlin
- Gender
- Girl
- Say it
- KAYT-lin
- Origin
- Greek
Caithlin is a girls' name of Greek origin, meaning “pure”. Too few babies were given it in the latest year to rank.
What does Caithlin mean?
Greek: variant of Caitlin, the Irish form of Catherine
“pure”
Variant of Caitlin, the Irish form of Catherine, which goes back to the Greek name Aikaterine.
Is Caithlin a girl's or a boy's name?
Caithlin is a girls' name.
How popular is Caithlin in the UK?
No girls in the UK were given it in 2025, or too few to be listed. Its busiest year was 2000, with 6 girls.
Caithlin in the UK, year by year
| Year | Girls | Rank |
|---|---|---|
| 2006 | 3 | #5,259 |
| 2005 | 0 | – |
| 2004 | 0 | – |
| 2003 | 0 | – |
| 2002 | 3 | #4,284 |
| 2001 | 4 | #3,427 |
| 2000 | 6 | #2,554 |
| 1999 | 1 | #5,182 |
| 1998 | 4 | #3,310 |
Nicknames for Caithlin
- Cait 6 girls in the UK in 2025
Names like Caithlin
Names given in the same years and the same naming tradition, with a similar sound.
Caoimhe Caragh Aoibheann Teagan Eireann Raegan Ffion Eilidh Ceylin Roisin Cassidy Tegan
Names related to Caithlin
Caitlin Caitlyn Kaitlin Caitlan Caitlynn Caitlen Caitlain Cathleen
More Greek names
Luca Theodore Sophia George Theo Lucas Sofia Alexander Sebastian Penelope Phoebe Margot Luke Chloe Sophie Zoe
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland) and Baby names (Northern Ireland Statistics and Research Agency). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Caithlin: name meaning, origin and popularity”, https://www.nameling.co.uk/names/caithlin, updated 20 October 2026.