Jailyn is a form of the English Jaelyn.
Jailyn is also a form of the English Jalen.
A form of Jailyn is the name Jailin.
Jailyn is uncommon as a baby girl name. At the modest height of its usage in 2007, 0.013% of baby girls were named Jailyn. It was #966 in rank then. The baby name has fallen out of favor since then, and is used only on a very light scale now. Within the family of girl names directly related to Jailyn, Jaelyn was the most frequently used in 2018. Jailyn has in the last century been primarily given to baby girls.
Baby names that sound like Jailyn include Jaelin, Jaelyn, Jaelyne, Jaelynn, Jaillin, Jaylin, Jaylyn, Jaylyne, Jaylynn, Jaylynne, Jacelyn, Jackeline, Jacklin, Jacklynn, Jacklynne, Jackquelyn, Jaclyn, Jacqlyn, Jacquelean, and Jacqueleen.
† approx English pronunciation for Jailyn: JH as in "joy (JH.OY)" ; EY as in "ate (EY.T)" ; L as in "lay (L.EY)" ; IH as in "it (IH.T)" ; N as in "knee (N.IY)"