Lismore is a historic town in County Waterford, in the province of Munster, Ireland. Originally associated with Saint Mochuda of Lismore, who founded Lismore Abbey in the 7th century, the town developed around the medieval Lismore Castle. As of the 21st century, Lismore supports a rural catchment area, and was designated as a "district service centre" in Waterford County Council's 2011–2017 development plan. As of 2022, the town had a population of 1,347 people.