The Bishop of Waterford and Lismore is an episcopal title which takes its name after the city of Waterford and town of Lismore in the Republic of Ireland. The title was used by the Church of Ireland until 1838, and is still used by the Roman Catholic Church.
The bishopric is a union of the episcopal sees of Waterford and Lismore which were united by Pope Urban V in 1363. Following the Reformation, there were parallel successions.
In the Church of Ireland the see continued until 1833 when it became part of the archbishopric of Cashel. In 1838, the Anglican province of Cashel lost its metropolitan status and became the bishopric of Cashel and Waterford. It was further united with the Sees of Ossory, Ferns and Leighlin to become the united bishopric of Cashel and Ossory in 1977.
In the Roman Catholic Church the title remains as separate bishopric. The present Incumbent is the Most Reverend Alphonsus Cullinan, Bishop of the Roman Catholic Diocese of Waterford and Lismore, who was appointed by the Holy See on 2 February 2015 and ordained bishop on 12 April 2015.
Appointed on 16 (or 26) May 1671, papal brief dated 19 May 1671, and consecrated on 6 September 1671. Translated to Cashel on 8 May 1677, but retained the administration of Waterford & Lismore until his death in 1693.