O' Donnell Park (Páirc Uí Dhónaill in Irish) is a Gaelic Athletic Association stadium in Letterkenny, County Donegal, Ireland. It is situated on the Churchill road in the town and is home to St Eunan's GAA Club.
During the Fleadh Cheoil na hÉireann 2006, the ground was used as a makeshift campsite for visitors to the town for the duration of the festival.
On March 25 2007, the ground hosted its first intercounty football match in three decades when Donegal beat Kerry by 1-15 to 0-13 in the Allianz Football League. There was a half hour delay after the Kerry team were unable to arrive on time due to fog at the airport. The match was broadcast live on TG4.
On April 13 2008, the ground hosted its second intercounty football match. Derry beat Donegal 0-15 to 0-10 in the NFL Division 1 semi-final.