The Premier League is an English professional league for association football clubs. At the top of the English football league system, it is the country's primary football competition. Contested by 20 clubs, it operates on a system of promotion and relegation with The Football League. The Premier League is a corporation in which the 20 member clubs act as shareholders. Seasons run from August to May, with teams playing 38 games each totalling 380 games in the season. Most games are played on Saturdays and Sundays, with a few games played during weekday evenings. It is sponsored by Barclays Bank and therefore officially known as the Barclays Premier League.

The competition formed as the FA Premier League on 20 February 1992 following the decision of clubs in the Football League First Division to break away from The Football League, which was originally founded in 1888, and take advantage of a lucrative television rights deal. The Premier League has since become the world's most watched sporting league. It is the world's most lucrative football league, with combined club revenues of £1.93 billion ($3.15bn) in 2007–08. It is also ranked first in the UEFA coefficients of leagues based on performances in European competitions over the last five years, ahead of Spain's La Liga and Italy's Serie A.

A total of 43 clubs have competed in the Premier League, but only four have won the title: Arsenal, Blackburn Rovers, Chelsea, and Manchester United. The current champions are Manchester United, who won their eleventh Premier League title in the 2008–09 season, the most of any Premier League team. This title triumph also levelled United and Liverpool on 18 top-flight championships altogether.