Kaitlyn is a variation (English) of the name Caitlin (English and Irish).
Kaitlyn is also a spelling variant of the name Kaitlin (English).
Kaitlyn is also a variation of the name Katherine (English).
Kaitlyn is a fairly popular baby name for girls. The name's popularity increased from the 1980s up to the 2000s; before that, it was of very light use only. At the modest peak of its usage in 2000, 0.439% of baby girls were named Kaitlyn. It ranked at #30 then. The baby name has since experienced a loss in popularity. In 2018, its usage was 0.043% and its ranking #387. Out of the group of girl names directly related to Kaitlyn, Katherine was the most widely used. In 2018, the name was thrice as popular as Kaitlyn.
Baby names that sound like Kaitlyn include Kaitlin, Kaitlinn, Kaitlinne, Kaitlyne, Kaitlynn, Kaitlynne, Kate Lynn, Kate-Lynn, Katelin, Katelinn, Katelyn, Katelyne, Katelynn, Katelynne, Caitlinn, Caitlyn, Caitlyne, Caitlynn, Kadelyn, and Kaetlin.
† Pronunciation for Kaitlyn: K as in "key (K.IY)" ; EY as in "ate (EY.T)" ; T as in "tee (T.IY)" ; L as in "lay (L.EY)" ; IH as in "it (IH.T)" ; N as in "knee (N.IY)"