The Limerick–Rosslare Main Line is a railway route in Ireland that linked the city of Limerick on the Atlantic coast with Rosslare Europort on the coast of the Irish Sea. It also serves the city of Waterford, and at Limerick Junction it connects with the Dublin–Cork railway line.

Rosslare Europort is a modern seaport located at Rosslare Harbour in County Wexford, Ireland, near the southeasternmost point of the island of Ireland. The port is the primary Irish port serving the European Continent with 36 direct services to the Continent weekly. It handles passenger and freight ferries to and from Cherbourg, Dunkirk and St Malo/Roscoff, in France, Bilbao in Spain and Fishguard and Pembroke Dock in the United Kingdom. Since July 2022, a new freight route between Rosslare and Zeebrugge, Belgium was introduced by Finnlines for a twice weekly ro-ro service between the two ports.