Ireland's only light rail service, the Luas tram system, is in Dublin. No metro lines currently exist in Ireland but there is a planned MetroLink line which would serve Dublin.
There are 3 main train stations in Dublin:
Connolly Train Station 1 Amiens St · +(01) 836 6222
Heuston Station Train Station Heuston Station St. Johns Road West · +353 1 703 2132
Grand Canal Dock Train Station Barrow St · +353 1 703 1470