American football
International play

American football leagues exist throughout the world, but the game has yet to achieve the international success and popularity of baseball and basketball. It is not an Olympic sport, but it was a demonstration sport at the 1932 Summer Olympics. At the international level, Canada, Mexico, and Japan are considered to be second-tier, while Austria, Germany, and France would rank among a third tier. These countries rank far below the United States, which is dominant at the international level.

NFL Europa, the developmental league of the NFL, operated from 1991 to 1992 and then from 1995 to 2007. At the time of its closure, NFL Europa had five teams based in Germany and one in the Netherlands. In Germany, the German Football League (GFL) has 16 teams and has operated for over 40 seasons, with the league's championship game, the German Bowl, closing out each season. The league operates in a promotion and relegation structure with German Football League 2 (GFL2), which also has 16 teams. The BIG6 European Football League functions as a continental championship for Europe. The competition is contested between the top six European teams.

The United Kingdom also operated several teams within NFL Europe during the League's tenure. The resulting rise in popularity of the sport brought the NFL back to the country in 2007 where they now hold the NFL International Series in London, currently consisting of four regular season games. The continuing interest and growth in both the sport and the series has led to the possible formation of a potential NFL franchise in London

An American football league system already exists within the UK, the BAFANL, which has run under various guises since 1983. It currently has 70 teams operating across the tiers of contact football in which teams aim to earn promotion to the Division above, with the Premier Division teams competing to win the Britbowl, the annual British Football Bowl game that has been played since 1985. In 2007, the British Universities American Football League was formed. From 2008, the BUAFL was officially associated with the National Football League (NFL), through its partner organization NFL UK. In 2012, BUAFL's league and teams were absorbed into BUCS after American football became an official BUCS sport. Over the period 2007 to 2014, the BUAFL grew from 42 teams and 2,460 participants to 75 teams and over 4,100 people involved.

American football federations are present in Africa, the Americas, Asia, Europe, and Oceania; a total of 75 national football federations exist as of 2023. The International Federation of American Football (IFAF), an international governing body composed of continental federations, runs tournaments such as the IFAF World Championship, the IFAF Women's World Championship, the IFAF U-19 World Championship, and the Flag Football World Championship. The IFAF also organizes the annual International Bowl game. The IFAF has received provisional recognition from the International Olympic Committee (IOC). Several major obstacles hinder the IFAF goal of achieving status as an Olympic sport. These include the predominant participation of men in international play and the short three-week Olympic schedule. Large team sizes are an additional difficulty, due to the Olympics' set limit of 10,500 athletes and coaches. American football also has an issue with a lack of global visibility. Nigel Melville, the CEO of USA Rugby, noted that "American football is recognized globally as a sport, but it's not played globally." To solve these concerns, major effort has been put into promoting flag football, a modified version of American football, at the international level. Flag football has been shortlisted for appearance at the 2028 Summer Olympics, pending final approval by the International Olympic Committee.
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