Waterford is a city in the Republic of Ireland. It is the primary city of the South East region, and the fifth largest in the country. Founded in 914 AD, by the Vikings, it is Ireland's oldest city.

Waterford is the largest city in Ireland to retain its Viking-derived name, Vedrarfjord. Reginald's Tower, named after the city's founder, Regnall, is the oldest urban civic building in Ireland, and the oldest monument to retain its Viking name. It is to this day Waterford's most recognisable landmark. The population of the city in 2006 was 49,240; of which 45,775 lived within the city limits, and 3,465 lived in the city's suburbs in County Kilkenny.

The River Suir flows through Waterford city and has provided the basis for Waterford's long maritime history. Waterford Port has been one of Ireland's major ports for over a millennium. In the 19th century shipbuilding was a major industry in the city. The owners of the Neptune Shipyard, the Malcomson family, built and operated the largest fleet of iron steamers in the world between the mid-1850s and the late-1860s, including five trans-atlantic passenger liners. Today, Waterford is synonymous with Waterford Crystal the world over, a legacy of one of the city's most successful and enduring industries, glass making. Glass, or crystal, has been manufactured in the city since 1783.