Jilliann \j(i)-llia-nn\ as a girl's name is a variant of Jillian. See for origin and meaning of Jilliann.
The baby name Jilliann sounds like Jillianne, Jillianna, Jilliane and Jilliana. Other similar baby names are Lilliann, Dillian, Dillianna, Dilliana, Gillian, Jyllian, Jillyan, Gillianne, Gillianna, Julliana, Jiuliana, Jillane, Jillana, Jillan, Jilian, Jillyanne, Jillyanna, Jillanne, Jiliana, Juliann, Lillian, Lillianne, Lillianna, Lilliane and Lilliana.