thumb|400px|The Tuatha Dé Danann as depicted in [[John Duncan (painter)|John Duncan's Riders of the Sidhe (1911)]]
The Tuatha Dé Danann (, usually translated "folk of the goddess Danu"), also known by the earlier name Tuath Dé ("tribe of the gods" are a supernatural race in Irish mythology. Many of them are thought to represent deities of pre-Christian Gaelic Ireland. and whom the Tuatha Dé Danann defeat in the Battle of Mag Tuired. Prominent members include the Dagda ("the great god"); The Morrígan ("the great queen" or "phantom queen"); Lugh; Nuada; Aengus; Brigid; Manannán; Dian Cecht the healer; and Goibniu the smith, one of the Trí Dé Dána ("three gods of craft").
Several of the Tuath Dé are cognate with ancient Celtic deities: Lugh with Lugus, Brigit with Brigantia, Nuada with Nodons, Ogma with Ogmios, and Goibniu with Gobannus. or ancient people who became highly skilled in magic, but several writers acknowledged that at least some of them had been gods.
The Tuath Dé eventually became the aes sídhe, the sídhe-folk or "fairies" of later folklore.
Name
The Old Irish word túath (plural túatha) means "tribe, folk, people"; dé is the genitive case of día and, depending on context, can mean "god, gods, goddess" or more broadly "deity, divinity, supernatural being, object of worship". In the earliest writings, the mythical race are referred to simply as the Túath Dé or Túatha Dé. and is the "mother of gods" in Macalister's translation of the Lebor Gabala ("Book of Invasions").
<nowiki>*Danu</nowiki> may have been a continental Celtic goddess, cognate to the Welsh goddess Dôn and the Irish Ana/Anu. which may point to the origin being proto-Celtic *don, meaning "earth" and the British Dumnonii.
An alternative etymological hypothesis explains away Danann as a newly coined, tack-on word, merely added to the original form Túath Dé to avoid confusion with the same term Túath Dé used in a different sense denoting the Israelites () of the Bible.