Joslin \j(o)-slin, jos-lin\ as a girl's name (also used as boy's name Joslin), is a variant of Jocelyn (Old German), and the meaning of Joslin is "a member of the German tribe, the Gauts".

The baby name Joslin sounds like Joslyn, Josline and Josilin. Other similar baby names are Joelin, Ayslin, Jaclin, Jasmin, Jaslyn, Jalin, Jeslyn, Jolyn, Jozlyn, Josslyn, Jossline, Jossalin, Joslynn, Joslyne, Josilyn, Josiline, Joselyn, Joseline, Joselina, Joscelin, Josalyn, Josaline, Josalind, Joclyn, Jocelin, Jasolin, Joellin, Jolan, Joline, Jolina, Joeline, Josina, Roslyn, Roselin, Rosalin, Yosline and Yoslina.