Niall O'Donnell (born 1998) is an Irish Gaelic footballer who plays for St Eunan's and the Donegal county team. The Irish Independent's Colm Keys named O'Donnell among his "18 for [20]18: The brightest young talents" in Gaelic football, describing him as "both elusive and skilful". He is the younger brother of Conor O'Donnell Snr, the eldest of the St Eunan's Conor O'Donnells.