Iarnród Eireann has advised customers of changes to its DART, Commuter and Rosslare services over the bank holiday weekend.
The changes are due to demolition work at Lansdowne Road stadium.
A full northern and Maynooth commuter service will run to and from Connolly Station.
Services from Rosslare and Gorey to Dublin will operate a bus transfer between Greystones and Dublin.
A shuttle bus will operate between Tara Street and Booterstown stations for DART passengers making cross-city journeys and to southside stations.