Oneilland East
| Oneilland East Uí Nialláin Thoir(Irish) | |
|---|---|
| Location of Oneilland East, County Armagh, Northern Ireland. | |
| Sovereign state | United Kingdom | 
| Country | Northern Ireland | 
| County | Armagh | 
Oneilland East (from Irish Uí Nialláin, the name of an ancient Gaelic district) is a barony in the north-east of County Armagh, Northern Ireland. It is also called Clanbrasil (from Clann Bhreasail, "offspring of Breasal"). It lies in the north-east corner of the county, on the south-eastern shore of Lough Neagh and the boundary with County Down. Oneilland East is bordered by three other baronies: Oneilland West to the west; Iveagh Lower to the east; and Orior Lower to the south.