American football

Major: National Football League
Semi-pro: Empire Football League • Mid Continental Football League • Minor League Football Association • North American Football League • Southern States Football League • United States Football Alliance
Defunct major: All-America Football Conference • American Football League • United States Football League • World Football League
Defunct pro/semi-pro:Atlantic Coast Football League • Continental Football League • Hawaii Football League • NFL Europa • Regional Football League • Spring Football League • United Football League • XFL
Folded or merged before any games were played: Asia Pacific Football League • Professional Spring Football League
Planned: All American Football League (Spring 2008) • United Football League (Fall 2008)

Gridiron football or gridiron is a term used outside the United States and Canada that refers to both American football and Canadian football. ... United States simply as football, is a competitive team sport that is both fast-paced and strategic. ... The National Football League (NFL) is the largest and most prestigious professional American football league, consisting of thirty-two teams from American cities and regions. ... The Empire Football League (EFL) is a Semi-Pro American Football League that operates franchises based primarily in New York and Pennsylvania. ... The Mid Continental Football League (MCFL) is a semi-pro football league the currently consisting of ten teams in the Kentucky (1), Indiana (1), Ohio (3), and Michigan (5) areas. ... The Minor League Football Association ( MLFA ) is a full contact outdoor semi-pro minor league American football league, based in Sioux Falls, South Dakota. ... The North American Football League (NAFL) is a wholly owned subsidiary of 360 Sports Management. ... The Southern States Football League (SSFL) is a late winter-spring American football league with all of its teams based in Florida. ... The United States Football Alliance( USFA ) is a full contact outdoor semi-pro minor league American football league, based in Sharon, Pennsylvania. ... The All-America Football Conference (AAFC) was a professional American football league that challenged the established National Football League (NFL) from 1946 to 1949. ... The American Football League (AFL) was a professional football league that operated from 1960 until 1969, when all of its teams were absorbed into the National Football League (NFL). ... The United States Football League was a professional American football league that played three seasons between 1983 and 1985. ... WFL logo The World Football League was an American football league that played in 1974 and part of 1975. ... The Atlantic Coast Football League operated between 1962 and 1964 drawing many quality players from the East Coast schools. ... The Continental Football League was an American football league played in North America from 1965 through 1969. ... The Hawaii Football League (HIFL) was a semi-pro football league operating in Hawaii from 1994 to 2005. ... NFL Europa is an American football league which operates in Europe. ... The Regional Football League (RFL) was formed as the MAJOR LEAGUE OF SPRING FOOTBALL. The RFL season was designed for Spring/Summer play with the weekend prior to the Fourth of July designated as the annual date for its championship game. ... The SFL (Spring Football League) existed for one mini-season. ... The United Football League operated between 1961 and 1964. ... This article does not cite any references or sources. ... The Asia Pacific Football League was an American football league planned for play in Southeast Asia and the Pacific rim in 1999 and 2000. ... The Professional Spring Football League (PSFL) was an outdoor football league slated to begin in 1992. ... The All American Football League is a professional league of American football. ... For the league that operated in the 1960s, see United Football League (1960s). ...

Canadian football

Major: Canadian Football League
Semi-pro: Alberta Football League • Maritime Football League

Diagram of a Canadian football field. ... Lions Stampeders Eskimos Roughriders Blue Bombers Tiger-Cats Argonauts Alouettes The Canadian Football League (CFL) (Ligue canadienne de football (LCF) in French), is a professional sports league located in Canada that plays Canadian football. ... The Alberta Football League (AFL) is a semi-professional Canadian football competition. ... The Maritime Football League is a Mens tackle football league in the Maritime Provinces of Canada. ...

Arena/indoor football

Major: Arena Football League
Minor: af2 • American Indoor Football Association • American Professional Football League • Continental Indoor Football League • Intense Football League • United Indoor Football • World Indoor Football League
Defunct: Eastern Indoor Football League • Indoor Football League • Indoor Professional Football League • National Indoor Football League • Professional Indoor Football League
Folded or merged before any games were played: North American Indoor Football League • World Indoor Football League • Xtreme Football League Arena football is a sport invented by Jim Foster, a former executive of the United States Football League and the National Football League. ... Indoor football is a variation of American football with rules modified to make it suitable for play within basketball gymnasiums and, particularly, ice hockey arenas. ... The Arena Football League (AFL) was founded in 1987 as an American football indoor league. ... af2 (short for arenafootball2) is the name of the Arena Football Leagues minor league, which started play in 2000. ... The American Indoor Football Association (originally the Atlantic Indoor Football League, later American Indoor Football League) began play in 2005 with six teams based in the eastern United States. ... The American Professional Football League (APFL) is an indoor football league based in the midwestern United States that began play in 2003. ... The Continental Indoor Football League (CIFL) is a new indoor football league based along the Northeastern United States region. ... The Intense Football League is an indoor football league founded by Chad Dittman in 2004. ... The World Indoor Football League is a new indoor football league scheduled to begin play in 2007. ... The Eastern Indoor Football League is an indoor American football league that comprises teams located in the Mid-Atlantic and Northeastern United States. ... The Indoor Football League began in 1999 as an offshoot of the troubled Professional Indoor Football League. ... The Indoor Professional Football League (IPFL) was the new incarnation of the Professional Indoor Football League, which started in 1998. ... National Indoor Football League is a minor league indoor football league that is based in the United States. ... The Professional Indoor Football League was the first league to successfully play indoor football as a paid pro-league sport other than the Arena Football League. ... The North American Indoor Football League was a proposed indoor football league that announced plans in 2004 to begin play in fourteen Canadian cities in February 2005. ... The World Indoor Football League was a league that was to begin in 1988 to compete with the Arena Football League, which was playing its second season in 1988. ... This league is not to be confused with the XFL, an outdoor football league which operated in 2001 The Xtreme Football League was an indoor football league that was formed in 1999, to begin play in 2000. ...