The English word football may mean any one of several team sports (or the ball used in that respective sport), depending on the national or regional origin and location of the person using the word; the unqualified use of the word football usually refers to the most popular code of football in that region. The sports most frequently referred to as simply football are association football, American football, Australian rules football, Canadian football, Gaelic football, rugby league football and rugby union football.

Of the 45 national FIFA (Fédération Internationale de Football Association) affiliates in which English is an official or primary language, 43 use football in their organisations' official names, while Canada and the United States use soccer. In those two countries, other codes of football are dominant, and soccer is the prevailing term for association football. In 2005, Australia's association football governing body changed its name from soccer to football to align with the general international usage of the term.[1] In 2006, New Zealand decided to follow suit.[2]

There are also many other languages where the common term for association football is phonetically similar to the English term football. (See Names for association football.)

Some of the many different codes of football.