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
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. Its US peak was 2,937 in 1998.
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