1118 in Ireland

Events from the year 1118 in Ireland.

Incumbents

 * High King of Ireland: Domnall Ua Lochlainn

Events

 * Synod of Ráth Breasail
 * Enna mac Donnchada mac Murchada becomes King of Dublin.
 * Cu Faifne mac Congalaig becomes King of Uí Failghe.
 * Maelsechlainn Ua Faelain becomes King of the Déisi Muman.

Deaths

 * Diarmait Ua Briain, King of Munster.
 * Rogan mac Domnaill meic Conchobair, King of Uí Failghe.