In Irish folklore, the Bean Sidhe ("woman of the hills") is a spirit or fairy who fortells a death in a family by continual ghostly wailing. She is popularly known as the Banshee. When a Banshee is caught, she is obliged to tell the name of the doomed.

Traditionally, the Bean Sidhe has long streaming hair and is dressed in a gray cloak and green dress. Her eyes are fiery red from the constant weeping. When multiple Banshees wail together, it heralds the death of a bigshot.

The Scottish version of the Banshee is the Bean Nighe.