Cailyn is an English form of the English and Irish Caitlin.
Cailyn is also an English form of the English and Irish Kaylyn.
Cailyn is uncommon as a baby name for girls. At the modest height of its usage in 2009, 0.020% of baby girls were given the name Cailyn. It ranked at #712 then. The baby name has since experienced a marked decline in frequency, and is of only irregular use now. Within all girl names in its group, Cailyn was nonetheless the most widely used in 2018.
Baby names that sound like Cailyn include Caelin, Caelyn, Calin, Caylin, Caylyn, Kaelyn, Kailin, Kailyn, Kalene, Kalin, Kalyn, Kaylin, Kaylyn, Kaylyne, Kaylynn, Kaylynne, Cailene, Cailin, Calan, and Caline.
† Pronunciation for Cailyn: K as in "key (K.IY)" ; EY as in "ate (EY.T)" ; L as in "lay (L.EY)" ; IH as in "it (IH.T)" ; N as in "knee (N.IY)"