Upper Ossory (Irish: Osraighe Uachtarach) was an administrative barony in the south and west of Queen's County (now County Laois) in Ireland. In late Gaelic Ireland it was the túath of the Mac Giolla Phádraig (Fitzpatrick) family and a surviving remnant of the once larger kingdom of Ossory. The northernmost part of the Diocese of Ossory and medieval County Kilkenny, it was transferred to the newly created Queen's County, now known as County Laois, in 1600. In the 1840s its three component cantreds, Clarmallagh, Clandonagh, and Upperwoods, were promoted to barony status, thereby superseding Upper Ossory.