Duhallow GAA is a Gaelic football and Hurling division in the barony of Duhallow, County Cork, Ireland. This barony is situated in the northwest region of the county, and includes towns such as Kanturk, Millstreet, and Newmarket. It is one of eight divisions of Cork County Board. It organizes competitions for the clubs within the division, from Under 12 up to the adult level. The winners of these competitions compete against other divisional champions to determine which club is the county champion. In addition, the division selects football and hurling teams from the adult teams playing at junior level or county intermediate level, and these then compete for the Cork Senior Football Championship and Cork Senior Hurling Championship. Since hurling is the weaker sport in the division, a divisional team has also participated in the Cork Minor Hurling Championship and Cork Under-21 Hurling Championship.
Duhallow (Irish: Dúiche Ealla) is a barony located in the north-western part of County Cork, Ireland.
Baronies were created after the Norman invasion of Ireland as divisions of counties and were used in the administration of justice and the raising of revenue. While baronies continue to be officially defined units, they have been administratively obsolete since 1898. However, they continue to be used in land registration and in specification, such as in planning permissions. In many cases, a barony corresponds to an earlier Gaelic túath which had submitted to the Crown.
It is located on the borders of counties Kerry and Limerick, and is bounded on the south by the Boggeragh Mountains. The Blackwater river flows southward from Ballydesmond to Rathmore before turning eastward past Millstreet, Kanturk and Banteer, eventually flowing to the sea at Youghal. The main towns in Duhallow are Kanturk, Newmarket and Millstreet, with smaller villages such as Ballydesmond, Banteer, Lyre, Kilcorney, Nadd, Ballydaly, Boherbue, Castlemagner, Cullen, Kiskeam, Kilbrin, Knocknagree, Lismire, Meelin, Freemount, Rockchapel and Tullylease.