This is a list of lighthouses in Ireland. The Commissioners of Irish Lights are responsible for the majority of lighthouses around the country, though a small number are maintained by local harbour authorities. The main list identifies those lighthouses in a clockwise direction starting with Crookhaven lighthouse, County Cork.
A smaller number of active lighthouses are operated by other authorities, primarily the port and harbour companies located around the Irish coast.
Improvements and changes to the aids to navigation around the Irish coast, has meant that there are a number of lighthouses that have been decommissioned. This list includes those where the tower or structure is still in existence. Some of these have been reused, such as Ferris Point which is now a vessel control tower. Clare Island was turned into a guest house and the optic is on permanent rotating display at the World of Glass museum and visitor centre in North West England. The older Wicklow Head tower was refurbished by the Irish Landmark Trust as a holiday let.