The title "Viscount of Clonmell" is a noble rank in the peerage of Ireland, created in 1758. It is associated with the town of Clonmel, located in County Tipperary. The title was established for John O'Neill, who was a prominent figure in Irish politics and law during the 18th century. The Viscountcy is part of the Peerage of Ireland, which includes various titles such as duke, marquess, earl, and baron. The holders of the title have historically played significant roles in the governance and social life of Ireland, contributing to its rich cultural heritage.