The name Eileen is a girl's name of Gaelic, Scottish, Scotch-Irish origin meaning "bright, shining one". Eileen is ranked #688 on our popularity charts and is often added to lists like Names That Mean Hope and discussed in our forums with posts like "A brother or sister for little Jack or Olivia".
From the experts:
Irish Aileen continues to be more popular than Scottish Eileen, though both names have seen an unexpected resurgence since 2012. Nicknames for Eileen include Isla, Lee and Lina. Eileen is an Anglicized form of the Gaelic Eibhlin or Aibhilin. It was quite popular in the early part of the twentieth century.