國有
Ireland's railways are in State ownership, with Iarnród Éireann (Irish Rail) operating services in the Republic and NI Railways operating services in Northern Ireland. The two companies co-operate in providing the joint Enterprise service between Dublin and Belfast. InterCity services are provided between Dublin and the major towns and cities of the Republic, and in Ulster along the Belfast–Derry railway line. Suburban railway networks operate in Dublin, Dublin Suburban Rail, and Belfast, Belfast Suburban Rail, with limited local services being offered in, or planned for, Cork, Limerick, and Galway.