Eliogarty (Irish: Éile Uí Fhógarta) is a barony in County Tipperary, Ireland. This geographical unit of land is one of 12 baronies in County Tipperary. Its chief town is Thurles. The barony lies between Ikerrin to the north (whose chief town is Roscrea), Kilnamanagh Upper to the west (whose chief town is Borrisoleigh), Middle Third to the south (whose chief town is Cashel) and County Kilkenny to the east. It is currently administered by Tipperary County Council.
Baronies were created after the Norman invasion of Ireland as divisions of counties and were used the administration of justice and the raising of revenue. While baronies continue to be officially defined units, they have been administratively obsolete since 1898. However, they continue to be used in land registration and in specification, such as in planning permissions. In many cases, a barony corresponds to an earlier Gaelic túath which had submitted to the Crown. This is probably true in the case of Eliogarty - see History below.
The ancient territory of Éile obtained its name from pre-historic inhabitants called the Eli, about whom little is known beyond what may be gathered from legends and traditions. The extent of Éile varied throughout the centuries with the rise and fall of the tribes in occupation. Before the 5th century A.D. the details of its history which can be gleaned from surviving records and literature are exceedingly meagre, obscure and confusing. During this century however Éile appears to have reached its greatest extent, stretching from Croghan Bri Eli (Croghan Hill in Offaly) to just south of Cashel (in Corca Eathrach Eli). The southern part of this territory embraced the baronies of Eliogarty and Ikerrin, a great part of the modern barony of Middlethird, the territory of Ileagh, and portion of the present barony of Kilnamanagh Upper.