Iveagh Lower, Lower Half is the name of a barony in County Down, Northern Ireland. It was created by 1851 with the division of the barony of Iveagh Lower into two. It is bordered by six other baronies: Massereene Upper to the north; Castlereagh Upper to the east; Iveagh Lower, Upper Half and Iveagh Upper, Upper Half to the south; Oneilland East and Orior Lower to the west.