RATHDOWNEY, a market-town of Ireland, Queen's County, on an affluent of the Nore, 19 miles S.W. of Maryborough. It has a good parish church, Methodist and Roman Catholic chapels, two schools, a barrack, and a dispensary. In the parish there are, besides other remains, those of an abbey and of three castles. A brewery and a boulding-mill are the only manufactures. Pop. (1851) 1192.