Jyllian \j(yl)-lian\ as a girl's name is a variant of Gillian (Latin), and the meaning of Jyllian is "youthful".

The baby name Jyllian sounds like Jillian, Jillyan, Julliana, Jillan, Jilian, Jyllina, Jilliann, Jilliane and Jilliana. Other similar baby names are Dillian, Dyllan, Jullia and Lillian.