Swansea City AFC  is a Welsh football club  founded in the summer of 1912 in the heartland of a region with strong rugby union affiliations.  Soon after they joined the second division of the Southern League and during that first season won the Welsh Cup for the first time.  Following the First World War the Southern League dropped its second division, and with many clubs dropping out due to financial difficulties, Swansea was placed in the first division. After just four seasons in the Southern League, Swansea Town became founder members of the new Third Division of The Football League in 1920 and then Division Three (South) the following season. After five seasons in Division Three (South) and a few failed bids for promotion, Swansea reached the Second Division for the first time in 1925. The remainder of the interwar period consisted mostly of finishing  in the bottom half of the Second Division with  much of the post-war period spent in the Third Division. Relegation to Division Four followed in 1967. Periods in the third and fourth Division followed before the arrival of John Toshack in 1978.  There followed a remarkable climb from the Fourth Division to the top First Divison in consecutive seasons. Two consecutive relegations followed and Toshack was sacked. Wound up by court order in December 1985, Swansea City was saved by local businessman Doug Sharpe who took over the running of the club, although the change of ownership was not enough to prevent relegation to the Fourth Division in 1986. 

Swansea were promoted to Division Three in 1988 where they remained until 1996 when they were relegated to what was now Division Three (the old Fourth Division). Promoted as champions in 2000, Swansea lasted only one season at the higher level. During the 2001-02 season the club changed hands several times and was again on the verge of bankruptcy, narrowly avoiding relegation to the Conference in 2003.  The club moved to the new Liberty Stadium during the summer of 2005. A revival in fortunes unde Roberto Martínez from 2007 included the First Division title and this improvement continued under Brendan Rodgers who took over in 2010 and secured promotion to the Premier League in 2010/11. A respectable position in their first season in the top tier of English football signaling a remarkable turnaround in the club’s fortunes. Michael Laudop replaced Rodger after his departure for Liverpool in June 2012.   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 English trophy in the club's history and qualifying for the 2013–14 UEFA Europa League. Swansea were relegated from the Premier League at the end of the 2017-18 season.