Swansea City Association Football Club is a professional football club based in Swansea, Wales.
Swansea have played their home matches at the Liberty Stadium since 2005, having previously played at the Vetch Field since the club was founded.
The club was founded in 1912 as Swansea Town and entered into the Southern League, winning the Welsh Cup in their debut season. They were admitted into the Football League in 1920 and won the Third Division South title in 1924–25. They again won the Third Division South title in 1948–49, having been relegated two years previously. They fell into the Fourth Division after relegations in 1965 and 1967. The club changed their name to Swansea City in 1969 to reflect Swansea's new status as a city. They were promoted at the end of the 1969–70 season, though were relegated again in 1975.
The club won three promotions in four seasons to reach the First Division in 1981. It was during the following season they came close to winning the league title, but a decline then set in near the season's end, before they finished sixth, still a club record. It was from here the club suffered a relegation the season after, returning to the Fourth Division by 1986 and then narrowly avoiding relegation to the Conference in 2003. The Swansea City Supporters Society Ltd owns 20% of the club, with their involvement hailed by Supporters Direct as "the most high profile example of the involvement of a supporters' trust in the direct running of a club". The club's subsequent climb from the fourth division of English football to the top division is chronicled in the 2014 film, Jack to a King – The Swansea Story.
In 2011, Swansea were promoted to the Premier League. On 24 February 2013, Swansea beat Bradford City 5–0 to win the 2012–13 Football League Cup (the competition's highest ever winning margin for the final), winning the first major trophy in the club's history and qualifying for the 2013–14 UEFA Europa League, in which they reached the round of 32 but lost over two legs to Napoli. The club was relegated from the Premier League at the end of the 2017–18 season.