Caitlyn

A girls’ name of Irish origin, meaning pure; a modern variant of Caitlin or Cathleen.

Babies a year
227
the US, 2017
Rarity
Rare
among names in use
US popularity
—
outside the top 1000
UK popularity
#1315
24 babies

Caitlyn by the numbers

In 2025, 24 babies in England and Wales were named Caitlyn. In the US, 227 were, though that figure is from 2017, the most recent full year we hold.

For the size of the two countries, it is given noticeably more often in the US than in England and Wales.

Its American peak was 2,937 babies in 1998, so it is a 1990s name that has since fallen a long way.

Other names that come from Caitlin

Like Caitlyn, each of these traces back to Caitlin: a form of it, a name built from it, or a son or daughter of it. Not always the same sex.

  • Kailynpure; a modern respelling of Caitlin294 in the US (2017)
  • Kaylinpure; a modern respelling of Caitlin or Katelin290 in the US (2017)
  • Kailynnpure; a modern respelling of Caitlin157 in the US (2017)
  • Keylinpure; a respelling of Katelin, Caitlin or variant of Kaytlin62 in the US (2017)
  • Caitpure; form of Caitlin or Caite6 in the US (2017)
  • Katilynpure; a form of Caitlin6 in the US (2017)
  • Katilynnpure; a form of Caitlin6 in the US (2017)
  • Katlinvariant of Katelyn or Caitlin; pure

Spelled almost the same

Other names in the records within a letter or two of Caitlyn. Close spellings are not always related names, but they are usually worth seeing together.

  • Caitlinpure; form of Caitríona33 in England and Wales (2025)
  • Cailynpure; a modern respelling of Caitlin or Caitlyn87 in the US (2017)
  • Caitlynnpure; variant of Caitlin41 in the US (2017)
  • Carolynstrong and womanly; a form of Caroline321 in the US (2017)
  • Caidynbattle; a modern respelling of Caden43 in the US (2017)
  • Cailynnpure; a modern respelling of Caitlyn or Caitlin40 in the US (2017)

Sounds like Caitlyn

Names that are said the same way as Caitlyn, however they are written. Sounding alike does not mean they share a history.

  • Kaitlynpure; modern respelling of Caitlin or Katelyn929 in the US (2017)
  • Kaitlynnpure; a modern spelling of Caitlín144 in the US (2017)
  • Kaitlinpure; a form of Caitlin or Katherine65 in the US (2017)
  • Katlynpure; a form of katherine or kathryn19 in the US (2017)
  • Kaytlinpure; a form of Katelin or Caitlin18 in the US (2017)
  • Katlynnpure; a form of Caitlin6 in the US (2017)

Other names that mean purity

Like Caitlyn, each of these has purity in its meaning. Different names, different histories, the same idea.

  • Lillianlily; purity6,139 in the US (2017)
  • Lilythe lily flower; purity2,249 in England and Wales (2025)
  • Katherinepure2,833 in the US (2017)
  • Jadejade stone; symbol of virtue and beauty2,765 in the US (2017)
  • Lilianalily; purity2,747 in the US (2017)
  • Catherinepure; clear1,573 in the US (2017)

Names about as common as Caitlyn

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