Bishop of Limerick and Killaloe

The united bishopric has three cathedrals: • St Mary's Cathedral, Limerick • St Flannan's Cathedral, Killaloe • St Brendan's Cathedral, Clonfert Five others are in ruins or no longer exist: • St Brendan's Cathedral, Ardfert was destroyed by fire in 1641 • St Alibeus' Cathedral, Emly was demolished in 1877 • Kilmacduagh cathedral, which is partly in ruins • Aghadoe Cathedral, which is partly in ruins • Kilfenora Cathedral, which is partly in ruins, dates from the 12th century. ==Archdeacons==

For administrative purposes the diocese is divided into two Archdeaconries. As of 2023, Simon Lumby was the Archdeacon of Limerick, Ardfert and Aghadoe and John Godfrey was the Archdeacon of Tuam and Killaloe. ==List of bishops==

==Episcopal combination history==