Clonmel (Irish, vale of honey), a town and parliamentary borough of Ireland, in the counties of Watcrford and Tipperary, on the Suir, 90 m. S. TV. of Dublin, and 25 m. N. W. of Waterford; pop. in 1871, 9,484. It is finely situated in a picturesque valley, nearly shut in by mountains. Most of the town is built on the N. or Tipperary side of the river, which is crossed by three stone bridges. The main streets are handsome and well paved. Gas is generally used, and the supply of water is abundant. The best houses are of limestone quarried in the vicinity. There is a handsome new court house, a county jail, barracks for infantry and artillery, a military hospital, a club house, a fine parish church, a well endowed grammar school founded in 1685, a lunatic asylum, workhouse, infirmary, fever hospital, dispensary, two orphan establishments, and other charitable institutions. It has a considerable trade in grain, cattle, butter, and bacon; the butter market is a commodious building. There are general fairs in May and November, and also special fairs every alternate month, chiefly for cattle.

Clonmel is said to have been fortified by the Danes. It was taken by Cromwell in 1650, and the fortifications demolished.