The Downpatrick & County Down Railway is a heritage railway in County Down, Northern Ireland. The project is based at Downpatrick, on part of the former route of the Belfast & County Down Railway.
The railway, which has a triangular layout, connects two local tourist attractions, Inch Abbey to the north, and a locally famous Viking site ('King Magnus' Grave') to the south. An aspiration exists to reach an 18th-century corn mill to the West near the Ballydugan Lake. It is the only operational Irish standard gauge (5' 3") heritage railway in the whole of Ireland.
Gauge: 5ft 3in
Length: 3 miles
Type: Standard Gauge Railway
Location: Market Street, Downpatrick
Postcode: BT30 6LZ