Ikerrin (Irish: Uí Chairín) is a barony in County Tipperary, Ireland. This geographical unit of land is one of 12 baronies in County Tipperary. Its chief town is Roscrea. The barony lies between Eliogarty to the south (whose chief town is Thurles) and Ormond Upper to the west (whose chief town is Toomevara). As a "peninsula", it is surrounded on three sides by counties Offaly and Laois. The territory is currently administered by Tipperary County Council.