A modern spelling of Caitlin or Kaitlyn, from the Irish form of Katherine meaning "pure."
Caitylyn is a modern spelling of Caitlin or Kaitlyn, both descended from the Irish form of Katherine and ultimately from Greek katharos, meaning pure. The Katherine family has generated many English-language variations, and Caitylyn belongs to the group of names that keep the same sound while adjusting the visual form for individuality.
Its spelling gives the name a slightly more decorative and contemporary appearance than the standard versions. Caitylyn feels like a name shaped by modern taste for customized spellings and soft, feminine endings. It remains connected to a familiar and historically well-rooted source, but it presents that source through a newer graphic style.
The result is a name that sounds approachable and familiar, while still looking distinct enough to register as uncommon. In that sense, Caitylyn reflects a broader trend in contemporary naming: a known classic made personal through altered spelling and visual texture.