Jillan \j(il)-lan\ as a girl's name is a variant of Jill and Jillian. See for origin and meaning of Jillan.

The baby name Jillan sounds like Gillan, Jillyan, Jillane, Jillana and Jilian. Other similar baby names are Dillan, Aillin, Callan, Kallan, Dillian, Dyllan, Dillon, Eilean, Ellan, Fallan, Gillian, Jyllian, Gilian, Jaylan, Jilly, Jillie, Jilli, Jillene, Jilleen, Jillayne, Jilana, Jilliann, Jilliane, Jilliana, Jillanne, Jillaine, Jiliana, Jolan, Jolean, Kellan, Lillian, Lilian and Nollan.