Barrow Bridge, Railway bridge in County Kilkenny, Ireland.

Barrow Bridge is a railway bridge in the southeast of Ireland, spanning the River Barrow between County Kilkenny and County Wexford. It has thirteen main spans resting on cast iron piers that rise directly from the water.

The bridge was built between 1902 and 1906 as part of a wider expansion of the Irish railway network. The project was led by engineer Sir Benjamin Baker, who had previously worked on the Forth Rail Bridge in Scotland.

The bridge is known locally as Barrow Bridge, and its name is used for the surrounding rural area. Passenger services between Rosslare Harbour and Waterford ran until 2010, so the line now carries no regular passenger trains. The single track uses bullhead rail and lower quadrant semaphore signals.

The bridge stands 26 ft (7.9 m) above the high water mark, and a short tunnel sits on the Kilkenny side of the line. The third span from the Kilkenny side pivots open from a cabin on top of the span, roughly twice a day, to let shipping and yachts reach New Ross. The structure was listed on An Taisce's Buildings at Risk Register in 2014.

The swing span is the third from the Kilkenny side and pivots electrically from a cabin on top of the span itself. The bridge opens about twice daily for shipping and yachts heading upstream to New Ross, and after a ship struck it in February 2022 Irish Rail planned to pin it open for repairs.