Jackelyn \j(a)-ckel-yn, jack(e)-lyn\ as a girl's name is a variant of Jacqueline (French). See for meaning of Jackelyn. The baby name Jackelyn sounds like Jacklyn, Jaclyn, Jaklyn, Jacklynn, Jaquelyn, Jacquelyn, Jacqlyn, Jacolyn, Jacklin, Jackalin and Jacalyn. Other similar baby names are Jacelyn, Jaelyn and Jocelyn.