Ballydesmond is a rural village in Co Cork. Formerly known as Kingwilliamstown, it is alongside the Blackwater River, near its source in Menganine, on the Cork-Kerry border. The Ballydesmond quarry is an area of geological interest, containing the best example of tundra forest polygons found in Ireland. There are numerous small businesses in Ballydesmond including pubs, shops and a filling station. The village is located on what was formerly the main Cork-to-Tralee road. The village centre is on the R577 regional road where it is joined by the R578 from the north and just west of where it is joined by the R582 from the south, and is about 45 kilometres west of Mallow, 17 kilometres west of Newmarket and 20 kilometres east of Castleisland, County Kerry. There are two primary schools in the parish and a creche. Ballydesmond lies in the Sliabh Luachra area which is famed for its traditional Irish music and culture. There is a Sliabh Luachra Bar (John D's) in the village.