Sport in Cardiff is dictated by, amongst other things, its position as the capital city of Wales, meaning that national home sporting fixtures are nearly always played in the city. All of Wales' multi-sports agencies and many of the country's sports governing bodies have their headquarters in Cardiff and the city's many top-quality venues have attracted world-famous sport events, sometimes unrelated to Cardiff or to Wales.

Cardiff Arms Park, also known as The Arms Park, is situated in the centre of Cardiff, Wales. It is primarily a rugby union stadium, but it also has a bowling green. The Arms Park was host to the British Empire and Commonwealth Games in 1958, and hosted four games in the 1991 Rugby World Cup, including the third-place play-off. The Arms Park also hosted the inaugural Heineken Cup Final of 1995–96 and the following year in 1996–97.