Heuston Station, also known as Dublin Heuston, is one of Dublin's largest railway stations and links the capital with the south, southwest and west of Ireland. It is operated by Iarnród Éireann (IÉ), the national railway operator. It also houses the head office of its parent company, Córas Iompair Éireann (CIÉ). The station is named in honour of Seán Heuston, an executed leader of the 1916 Easter Rising, who had worked in the station's offices.

Iarnród Éireann, or Irish Rail, is the operator of the national railway network of Ireland. Established on 2 February 1987, it is a subsidiary of Córas Iompair Éireann (CIÉ). It operates all internal InterCity, Commuter, DART and freight railway services in the Republic of Ireland, and, jointly with Northern Ireland Railways, the Enterprise service between Dublin and Belfast. In 2019, IÉ carried a record peak of 50 million passengers, up from 48 million in 2018.