Coordinates: 51°29′N 3°10′W / 51.48°N 3.17°W / 51.48; -3.17

Cardiff city centre (Welsh: Canol Dinas Caerdydd) is the central business district of Cardiff, Wales. The area is tightly bounded by the River Taff to the west, the Civic centre to the north and railway lines and two railway stations - Central and Queen Street - to the south and east respectively. Cardiff became a city in 1905.

The city centre in Cardiff consists of principal shopping streets, Queen Street and St. Mary's Street, large shopping centres, and numerous arcades and lanes that house some more smaller and often specialist shops and boutiques.

The city centre is going through a number of redevelopment projects, including St. David's 2, which extended the shopping district southwards, creating 100 new stores and a flagship John Lewis, the only branch in Wales and the largest outside London. Compared to nearby cities, the new St David's Centre has more retail space than the whole of Newport or Swansea.^{[citation needed]}

In 2008–9, the annual footfall of shoppers was 55 million, and is expected to have risen to 66 million by 2009–10. Cardiff is the sixth most successful shopping destination in the United Kingdom – behind London, Glasgow, Birmingham, Manchester and Liverpool.

Cardiff (ⁱ/ˈkɑrdɪf/; Welsh: Caerdydd (info) Welsh pronunciation: [kairˈdiːð, kaˑɨrˈdɨːð]) is the capital and largest city in Wales and the 10th largest city in the United Kingdom. The city is Wales' chief commercial centre, the base for most national cultural and sporting institutions, the Welsh national media, and the seat of the National Assembly for Wales. The unitary authority area's mid 2010 population was estimated to be 341,054, while the population of the Larger Urban Zone was estimated at 861,400 in 2009. Cardiff is a significant tourism centre and the most popular visitor destination in Wales with 18.3 million visitors in 2010. In 2011, Cardiff was ranked 6th in the world in National Geographic's alternative tourist destinations.

The city of Cardiff is the county town of the historic county of Glamorgan (and later South Glamorgan). Cardiff is part of the Eurocities network of the largest European cities. The Cardiff Urban Area covers a slightly larger area outside of the county boundary, and includes the towns of Dinas Powys and Penarth. A small town until the early 19th century, its prominence as a major port for the transport of coal following the arrival of industry in the region contributed to its rise as a major city.

A city centre is the commercial, cultural and often the historical, political and geographic heart of a city.

The city centre is the (often historical) area of a city where commerce, entertainment, shopping and political power are concentrated. The term is most commonly used in the United Kingdom and Ireland, as opposed to "downtown", which is most commonly used in North America. While in most cases, the CBD is within the city centre, the concept "city centre" differs from the Central business district. The latter solely revolves around economic and financial power, while the former also includes historical, political and cultural factors (e.g. La Défense is the central business district of Paris, but is not the city centre).

A city centre is often the first settled part of a city, which can make it the most historical part of a city.

In Dutch the terms binnenstad, centrum, stadscentrum or stadskern are used to describe the city centre. Amsterdam is a clear example of the city centre and the central business district not being the same area. The city centre of Amsterdam is Centrum, the historical heart of the city, while the CBD of Amsterdam is the Zuidas in the south.