Association football, commonly recognized as football or soccer, is a sport played between two teams of eleven players with a spherical ball.

It is the world's most well-liked sport. The game is played on a rectangular field of grass or green artificial turf, with a goal in the middle of each of the short ends. The object of the game is to score by pouring the ball into the opposing goal. In wide-ranging play, the goalkeepers are the only players allowed to touch the ball with their hands or arms, while the field players typically use their feet to kick the ball into position, occasionally by means of their torso or head to intercept a ball in midair.

The team that scores the most goals by the end of the match wins. If the score is tied at the end of the game, either a draw is affirmed or the game goes into extra time and or a penalty shootout, depending on the format of the competition.

The Laws of the Game available in England by the Football Association in 1863 remain the basis for the way the sport is played today. Football is governed globally by FIFA which organizes the World Cup every four years. The rules of football were codified in England by the Football Association in 1863 and the name association football was coined to differentiate the game from the other forms of football played at the time, specifically rugby football.

The term soccer originated in England, first appear in the 1880s as an Oxford "er" contraction of the word "association".