Manchester United Football Club is an English football club, based at Old Trafford in Trafford, Greater Manchester, and is one of the most popular football clubs in the world. The club was a founding member of the Premier League in 1992, and has played in the top division of English football since 1938, with the exception of the 1974–75 season. Average attendances at the club have been higher than any other team in English football for all but six seasons since 1964–65.

Manchester United are the reigning English champions and European and Club World Cup holders, having won the 2007–08 Premier League, the 2007–08 UEFA Champions League, and the 2008 FIFA Club World Cup. The club is one of the most successful in the history of English football and has won 21 major honours since Alex Ferguson became manager in November 1986. In 1968, they became the first English club to win the European Cup, beating Benfica 4–1. They won a second European Cup as part of a Treble in 1999, before winning their third in 2008. The club also holds the record for the most FA Cup titles with 11.

Since the late 1990s, the club has been one of the richest in the world with the highest revenue of any football club, and is currently ranked as the richest and most valuable club in any sport, with an estimated value of £897 million (€1.333 billion / $1.8 billion) as of September 2008. Manchester United was a founding member of the now defunct G-14 group of Europe's leading football clubs, and its replacement, the European Club Association.

Alex Ferguson has been manager of the club since 6 November 1986, joining from Aberdeen after the sacking of Ron Atkinson. The current club captain is Gary Neville, who succeeded Roy Keane in November 2005.

Early years (1878–1945)

main: History of Manchester United F.C. (1878–1945)

The club was formed as Newton Heath L&YR F.C. in 1878 as the works team of the Lancashire and Yorkshire Railway depot at Newton Heath. The club's shirts were green and gold halves. They played on a small, dilapidated field on North Road for fifteen years, before moving to Bank Street in the nearby town of Clayton in 1893. The club had entered The Football League the previous year and began to sever its links with the rail depot, becoming an independent company, appointing a club secretary and dropping the "L&YR" from their name to become simply Newton Heath F.C.. Not long afterwards, in 1902, the club neared bankruptcy, with debts of over £2,500. At one point, their Bank Street ground was even closed by the bailiffs.