Joslyne \j(o)-sly-ne, jos-lyne\ as a girl's name is a variant of Jocelyn (Old German), and the meaning of Joslyne is "a member of the German tribe, the Gauts".

The baby name Joslyne sounds like Joslynne, Joslynn, Joslyn, Josline and Joselyne. Other similar baby names are Jolyne, Jasmyne, Jaslynn, Jaslyn, Jeslyn, Josanne, Jolynn, Jolyn, Jolene, Jozlyn, Josslyn, Jossline, Joslin, Josilyn, Josiline, Joselyn, Joseline, Josalynn, Josalyn, Josaline, Joclyn, Jocelyne, Joelynn, Jolyna, Jollene, Joline, Joeline, Julyne, Justyne, Rosalyne, Roslynne, Roslynn, Roslyn, Yoslene and Yosline.