The Kildorrery Club as we know it today, was formed in 1949, with a view to uniting the existing clubs in the parish. It had its origins in the famed Oldcastletown Club, which was predominantly a Hurling Club. In 1943, Oldcastletown won the North Cork and County Junior Hurling titles, defeating Glen Rovers in the County final. The following two years they were runners-up in the Intermediate Hurling Championship when they were beaten by Lough Rovers and the 31st Battallion. It wasn’t until 1967 that football was taken seriously in the club. That year, Kildorrery won the North Cork U21 Football Championship. The big breakthrough didn't come until 1978 when the Junior footballers won the North Cork and County Junior Footbal titles for the first time in the clubs history. The following year they reached the Intermediate Football final but lost to Adrigole in Pairc Ui Chaoimh. In 1981 their persistence paid off and became Intermediate Football champions when they defeated Glanmire in the final played in Fermoy. They also won back to back U21 North Cork Football titles in 1981 and 1982. In their first year at Senior level in 1982, Kildorrery defeated Bishopstown in the first round but lost narrowly to St Nicholas in the next round. The following season they went under to a star studded St. Finbarrs side.
The club re-graded to the Intermediate ranks the following year and in 1986 dropped down to the Junior ranks as Hurling again came to the fore for a few years. The club won Junior Hurling titles in 1984 and again in 1988. Kildorrery won the North Cork football title in 1990 and again in 1994. The club had to wait a further 13 years for a junior title when they finally made the breakthrough last year by defeating Kilworth in the North Cork Final. They went on to contest the County final but were narrowly defeated by Canovee who went all the way to capture the All-Ireland Junior title. The nucleus of the present team were successful in 2004 when they won the North Cork U21 football title after a lapse of 22 years.