Flidais (meaning uncertain; pronounced FLIH dish) is a female member of the Tuatha Dé Danann. She is a "goddess of the hunt", somewhat akin to the Greek Artemis and Roman Diana.
She is said to be the mother of Fand.
She rides in a chariot drawn by deer.
Flidais is the only member of the Tuatha De Danann who is capable of true invisibility.