Maria McCool (born 23 May 1974) (Irish: Maria Nic Cumhaill) is an Irish singer from Gweedore, County Donegal. She is well known for performing old Irish songs in her native Irish and in English. Her albums include "Ailleog" and "Doagh", which she covered such songs as Ar Éirinn Ní Neosfainn Cé Hí and Song For Ireland. She has received numerous awards at Celticfestivals in Ireland and the UK. In 2007, Maria is currently married and works as a national school teacher in Dunshaughlin in County Meath.
Maria grew up as a member of the choir at St. Mary's church in Gweedore, singing alongside Enya, Aoife Ní Fhearraigh, Moya Brennan and other members of Clannad who are also members. Her music teacher at Pobalscoil Ghaoth Dobhair was Baba Brennan, the mother of Clannad and Enya.