Fiachna

 ( Irish-language Masculine Given Names ) 

Fiachna or Fiachnae is a name borne by several figures from Irish history and legend, including:

• Fiachnae mac Báetáin, king of the Dál nAraidi in the 7th century
• Fiachnae mac Demmáin, king of the Dál Fiatach in the 7th century
• Fiachan of Lismore, (died 630), early Irish monk who was venerated as a saint.
• Fiachnae mac Áedo Róin, (died 789), king of Ulaid
• Fiachna Ó Braonáin (born 1965), Irish rock musician (Hothouse Flowers)

• Fiach
• Fiacha
• Fiachra