Glyn \g-lyn, gl-yn\ as a boy's name (also used as girl's name Glyn), is a variant of Glen (Irish, Gaelic) and Glendower (Welsh), and the meaning of Glyn is "glen; valley of water".

The baby name Glyn sounds like Galyn, Glynn and Glin. Other similar baby names are Alyn, Flyn, Gwyn and Olyn.