Baron Clonmell was a title in the peerage of Ireland, created in 1800. The title was associated with the Clonmell family, particularly John Smith, who was the first to hold the title. The barony was named after the town of Clonmel, located in County Tipperary, Ireland. The title became extinct in 1855 when the last baron, Henry Smith, passed away without an heir. The history of the barony reflects the broader context of Irish nobility during the 19th century, a time of significant social and political change in Ireland.