Jillan is not often used as a baby girl name. It is not listed within the top 1000. In 2018, among the family of girl names directly related to Jillan, Jillian was the most frequently used.
Baby names that sound like Jillan include Jilan, Jaclin, Jaelan, Jaillen, Jailon, Jaquelen, Jayelan, Jayelen, Julian (English), Gyllian (English), Jacilyn (English), Jacilynn (English), Jackilyn (English), Jaelen, Jaelon, Jessilynn (English), Jilian (English), Jocilyn, Josilyn (English), and Julean.
† approx English pronunciation for Jillan: JH as in "joy (JH.OY)" ; IH as in "it (IH.T)" ; L as in "lay (L.EY)" ; AH as in "mud (M.AH.D)" ; N as in "knee (N.IY)"