The Secret of Roan Inish is a 1994 independent fantasy-adventure film written and directed by John Sayles.

The film is centred on the Irish and Orcadian folklores of selkies—seals that can shed their skins to become human. The story, set on the west coast of Ulster in the north-west of Ireland, is about Fiona, a young Irish girl with an unusual family history, including a long-missing baby brother. When she goes to live with her grandparents on the west coast of Ireland, Fiona hears stories about her ancestors, tales that involve mythical creatures called selkies who can shift from seal to human form. After Fiona ends up on the small island of Roan Inish, her family's ancestral home, she believes she may have found her little brother living by the sea.