Boann

right|thumb|300px|The River Boyne with [[Newgrange in the background.]] right|thumb|300px| The River Boyne as seen from [[Brú na Bóinne.]]

Boann or Boand is the Irish goddess of the River Boyne (Bóinn), an important river in Ireland's historical province of Meath. According to the Lebor Gabála Érenn and Táin Bó Fraích she was the sister of Befind and daughter of Delbáeth, son of Elada, of the Tuatha Dé Danann. Her husband is variously Nechtan or Elcmar. With her lover the Dagda, she is the mother of Aengus.