The City Hall, Dublin, originally the Royal Exchange, is a civic building in Dublin, Ireland. It was built between 1769 and 1779, to the designs of architect Thomas Cooley, and is a notable example of 18th-century architecture in the city. Originally used by the merchants of the city, it is today the formal seat of Dublin City Council.

Dublin is the capital and largest city of Ireland. On a bay at the mouth of the River Liffey, it is in the province of Leinster, bordered on the south by the Dublin Mountains, a part of the Wicklow Mountains range. At the 2022 census, the city council area had a population of 592,713, while Dublin City and its suburbs had a population of 1,263,219, and County Dublin had a population of 1,501,500.