The Dublin-Waterford line is a railway line in Ireland connecting Dublin with the major port of Waterford City in County Waterford.

The line is part of the significant network of InterCity routes connected to the Dublin-Cork Main Line from Dublin Heuston.

The line was constructed by the Great Southern and Western Railway.

[1] Both passenger and freight services run on the line.

InterCity passenger services are operated by the 22000 Class DMUs.