Eirin \e(i)-rin\ as a girl's name is a variant of Erin (Gaelic), and the meaning of Eirin is "Ireland".

The baby name Eirin sounds like Eirian, Eiryn, Eirinn, Airin and Eiren. Other similar baby names are Eilin, Arin, Carin, Karin, Corin, Korin, Edin, Eadin, Eir, Eira, Eireen, Eirwen, Ellin, Elin, Terin, Kerin, Eryn, Erinn, Erina, Eirynn, Eire, Aerin, Eris, Ermin, Etain, Farin, Eirene, Eirena, Airina, Lorin, Mairin, Marin, Miran, Niran, Tarin, Tirion, Tirien and Tirian.