MetroLink (Dublin)

MetroLink is a planned metro line in Dublin, Ireland. It replaces an earlier Metro North proposal, which was first recommended in the Government of Ireland's 2005 Transport 21 transport plan.

The line is planned to run from Estuary, north of Swords on Dublin's Northside, to Charlemont on the city's Southside, with stops at Dublin Airport, O'Connell Street, Tara Street and St Stephen's Green. The route is planned as a fully segregated, driverless metro, with tunnels beneath Dublin Airport and the city centre.

While the government stated in 2022 that MetroLink could be in operation in the early 2030s, later updates indicated a longer period of time. The Railway Order became operative in January 2026, after which the project moved into the procurement stage for its major infrastructure packages. As of 2025, construction was set to begin by 2027, and anticipated to take six to eight years. As of 2026, no official opening date had been confirmed.