Niall Ó Dónaill (27 August 1908 – 10 February 1995) was an Irish languagelexicographer from Ailt an Eidhinn, Loughanure, County Donegal. He was the oldest of the six children of Tarlach Ó Dónaill and Éilis Nic Ruairí from Grial, Loughanure. They had a little land and a few cows. His father would spend June to November working in Scotland and died when Niall Ó Dónaill was 13 years old. Ó Dónaill himself would spend summers working in the tunnels in Scotland.[1]
Ó Dónaill is most famous for his work as editor of the 1977 Irish-English dictionary Foclóir Gaeilge-Béarla, which is still widely used today.[citation needed]
Ó Dónaill wrote the book Bruigheann Féile which is based on stories of pastimes in the Gaeltacht town Loughanure and its surrounding area. Ó Dónaill's book Na Glúnta Rosannacha was first published in 1952.[3]