Meaning & Origin
Ailyn is a girl's baby name of Irish origin, a variant of Eileen or Aileen, which derives from the Irish Eibhlín — itself a form of the Old French Aveline or the Greek Helen, meaning 'bright,' 'shining,' or 'torch.'
Ailyn has a delicate, musical quality that feels both old and fresh. The spelling gives it a slightly more exotic look while keeping the familiar sound. It fits naturally alongside Ailish, Aisling, and other Irish girls' names with that distinctive lyrical lift.