Caitlain
- Gender
- Girl
- Say it
- KAYT-lin
- Origin
- Greek
Caitlain is a girls' name of Greek origin, meaning “pure”. Too few babies were given it in the latest year to rank.
What does Caitlain 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 Caitlain a girl's or a boy's name?
Caitlain is a girls' name.
How popular is Caitlain in the UK?
No girls in the UK were given it in 2025, or too few to be listed. Its busiest year was 2001, with 14 girls.
Half of all the girls named Caitlain in the UK since 1996 were born between 2000 and 2004, the years shaded on the chart below.
Caitlain in the UK, year by year
| Year | Girls | Rank |
|---|---|---|
| 2010 | 1 | #7,520 |
| 2009 | 0 | – |
| 2008 | 1 | #7,383 |
| 2007 | 4 | #4,494 |
| 2006 | 4 | #4,357 |
| 2005 | 7 | #2,806 |
| 2004 | 7 | #2,669 |
| 2003 | 9 | #2,109 |
| 2002 | 7 | #2,436 |
| 2001 | 14 | #1,461 |
| 2000 | 8 | #2,097 |
| 1999 | 6 | #2,559 |
| 1998 | 11 | #1,694 |
| 1997 | 3 | #3,991 |
Nicknames for Caitlain
- Cait 6 girls in the UK in 2025
Names like Caitlain
Names given in the same years and the same naming tradition, with a similar sound.
Caragh Ffion Caoimhe Teagan Aoibheann Eilidh Keira Eireann Raegan Tegan Niamh Rhiannon
Names related to Caitlain
Caitlin Caitlyn Catalina Kaitlin Caitlan Kaitlan Caitlynn Caitlen
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, “Caitlain: name meaning, origin and popularity”, https://www.nameling.co.uk/names/caitlain, updated 20 October 2026.