Leeds United FC is an English league team from the city of Leeds, Yorkshire. Leeds United's predecessor team Leeds City FC was formed in 1904, but was forcibly disbanded by The Football League in 1919 in response to allegations of illegal payments to players during the First World War. A new club, Leeds United, was formed and were voted into the Midland League in 1919, taking the place vacated by Leeds City Reserves. The following year Leeds United were elected to the Football League. Over the following few years, Leeds consolidated their position in the Second Division and in 1924 won the title and with it promotion to the First Division. However, they failed to establish themselves and were relegated in 1926–27.  They bounced back immediately and remained a mid-table First Division side until immediately after the Second World War when they again dropped into Division Two. They remained in the Second Division until 1955–56, when Leeds once again won promotion to the First Division, inspired by Welsh legend John Charles. Charles was sold to Juventus for a then world record of £65,000; the loss of such a key player led to Leeds' decline, and the team were relegated to the Second Division in 1959–60. In March 1961 the club appointed Don Revie as manager which would prove a turning point in their history. 

His stewardship began in adverse circumstances; the club was in financial difficulty and in 1961–62 only a win in the final game of the season saved the club from relegation to Division Three. Revie turned the team around, winning promotion to the First Division in 1963–64.  During this period the Leeds skip changed from gold and blue to the now familiar  all white skip in the hope of emulating Spanish giants Real Madrid. Between 1965 and 1974, Revie's Leeds never finished outside of the top four, won two League Championships (1968–69 and 1973–74), the FA Cup (1972), the League Cup (1968) and two Inter-Cities Fairs Cups (1968 and 1971).  After Revie's departure to manage the England team,  the appointment of Brian Clough, one of the club's most outspoken critics, began a remarkable 44-day period which has become part of football folklore. Cough was sacked after a series of indifferent results and with much of his team in open rebellion. He was replaced by Jimmy Armfield who guided the aging team to the European Cup Final in 1975 where they lost to Bayern Munich. There followed a slow decline which ended with Leeds being relegated to the Second Division in 1982. They did not return to the top flight until 1990, when they were managed by Howard Wilkinson. 

Leeds were league champions two seasons later, in 1992. During the 1990s and early 2000s Leeds competed for places in Europe, reaching the semi-finals of the UEFA Cup and the UEFA Champions League in consecutive seasons. However, after severe financial difficulties and a mass sale of players, Leeds were relegated from the Premier League in 2003-04 and subsequently from The Championship three years later when the club was deducted ten points for entering administration.  They returned to the Championship in 2010 where they remained for sixteen years despite a succession of high profile managers. Leeds finally returned to the Premiership in 2020 under Marcelo Bielsa and finished 9th in their first season. A poor series of results the following season led to the appointment of Jesse Marsch who secured the club its place in the top flight on the final day of the season. He was sacked the following season with the club fighting for its top flight existence. Neither Javi Gracia nor Sam Allardyce were able to prevent relegation at the end of the 2022-23 season.