Joslyn \j(o)-sl-yn, jos-lyn\ as a girl's name is a variant of Jocelyn (Old German), and the meaning of Joslyn is "a member of the German tribe, the Gauts".

The baby name Joslyn sounds like Jaslyn, Jeslyn, Jozlyn, Josslyn, Joslynn, Joslyne, Joslin, Josilyn, Joselyn and Josalyn. Other similar baby names are Jolyn, Joclyn and Roslyn.