The name Grainne is primarily a female name of Irish origin that means Grain.
In Irish mythology, Gráinne is the daughter of Cormac mac Airt. She is featured in the texts Finn and Gráinne and The Pursuit of Diarmuid and Gráinne. While the meaning is usually regarded as "grain", the meaning is uncertain and possibly means "sun" from the word ghrian.
Gráinne is sometimes Anglicized as Grania or Granya.
Famous bearers: Gráinne Ní Mháille, 16th century queen, chieftain of the Clan Ó Máille, and pirate. Gráinne Conole, Irish academic.