Lismore Cathedral, Anglican cathedral in Lismore, Ireland.

Lismore Cathedral is an Anglican cathedral built in stone in the town of Lismore, County Waterford, in the south of Ireland. The building has a central nave, a choir area, and several tomb monuments inside, including carved stone pieces from the medieval period.

The site was founded as a monastic centre in the 7th century and became one of the most important religious places in Ireland at that time. A fire in the 17th century destroyed the earlier structure, and Richard Boyle, the first Earl of Cork, paid for it to be rebuilt.

The cathedral is dedicated to Mochutu, also called Carthach, who founded a monastery on this site in 636 and died three years later; his feast day is 14 May. The monastery ran a school of regional importance, and in the 8th and 9th centuries it belonged to the Célí Dé reform movement, which rejected growing secularisation and cared for the poor and sick.

The cathedral sits in the centre of Lismore and is easy to reach on foot from most parts of the town. Visiting outside of service times gives you more freedom to look around the tombs and carved stonework at your own pace.

The cathedral keeps medieval fabric from the 13th-century building, notably the pier and arch of the south transept, which survived Edmund Fitzgibbon's destruction of the church around 1600. These are the oldest parts a visitor can still see, predating the 17th-century rebuilding under Sir William Robinson.