G
- Garden State Football League
- [[Gladiators Football League
- [[Golden State Amateur Football League
- [[Grassroots Football League
- [[Great Lakes Football League
- [[Great Midwest Football League
- [[Great Plains Football League
- [[Greater Chicagoland Football League
- [[Greater Midwest Football Conference
- [[Grid Iron Football Alliance
- [[Gridiron Developmental Football League
- [[Gulf Coast Football Association
- [[Gulf Coast Football League
- [[Gulf South Amateur Football League
H
- Hawaii Football League
- Heartland Football League
- Hearts of Ohio Football League
- High Desert Football League
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I
■Idaho Contact Football League ■Independent Football League ■Indoor Football League ■Indoor Football League (1999-2000) ■Indoor Professional Football League ■Inland Northwest Football League ■Intense Football League ■Inter-Mountain Semi-Pro Football League ■International Football League ■Interprovincial Rugby Football Union ■Interstate Football League (2004) ■Irish American Football League ■Ironman Football League
L
■LaBelle Community Football League ■Lake Erie Football League ■Lake Michigan Football League ■Lakeshore Football League ■Liberty Football Conference ■Louisiana AAA Football League
M
■Maine State Football League ■Manitoba Football League ■Maritime Football League ■Mason-Dixon Football League ■Michigan Charity Football League ■Michigan Football League ■Mid Atlantic Football League ■Mid Continental Football League ■Mid Ohio Football League ■Mid-America Football League ■Mid-Atlantic Football League ■Mid-Eastern Football League ■Mid-Land Football League ■Mid-States Football League ■Midwest Football Alliance ■Midwest Football League (1935–1940) ■Midwest Football League (1976-2005) ■Midwest Football League (2002–) ■Midwest Football League (IL/IN) ■Midwest Football League (IN/MI) ■Midwest Football League of Indiana
M cont.
■Millennium Football League ■Minnesota Semi-Pro Football ■Minor League Football Association ■Minor Professional Football League ■Montana Football League
N
■NFL Europa ■National Association of Intercollegiate Athletics ■National Collegiate Athletic Association ■National Developmental Football League ■National Football Federation ■National Football League ■National Football League (1902) ■National Independent Football League ■National Indoor Football League ■National Junior College Athletic Association ■National Minor League Football ■National Minor Pro Football League ■National Nineman Football League ■National Public Safety Football League ■New England Football League ■New Mexico Football Alliance ■New York Pro Football League ■New Zealand American Football League ■Niagara Regional Minor Football Association ■North American Football League ■North Atlantic Football League ■North East Football Association ■North South American Football League ■North South Football League ■North West Football League ■Northeast Football Association ■Northeast Independent Football League ■Northeastern Football Alliance ■Northern California Football League ■Northern Elite Football League ■Northern Football Conference ■Northern Missouri Football League ■Northern Ohio Football League ■Northern Power Football League ■Northern Pride Football League ■Northern States Football League ■Northwest Football League ■Northwest Indiana Football League
O
■Oahu Football League ■Ohio League ■Oklahoma Football League ■Oklahoma Metro Football League ■Ontario Rugby Football Union ■Oregon Football League
P
■Pacific Coast Football League ■Pacific Coast Football League (2010) ■Pacific Coast Professional Football League ■Pacific Football League ■Pacific Northwest Football Conference ■Premier Football League ■Professional Development Football League ■Professional Football League of America ■Professional Indoor Football League ■Professional Spring Football League ■Puerto Rican American Football Federation
Q
■Quebec Major Junior Football League ■Quebec Rugby Football Union
R
■Regional American Football League ■Regional Atlantic Footballl League ■Regional Football League ■Rocky Mountain Football League
S
■Seaboard Football League ■Semi-Pro Football League ■Sevenman Tackle Football League ■Six-Man Football Association ■South Central Football League ■South Texas Amateur Football League ■South West Football League ■Southeast Football League ■Southeastern American Football League ■Southern American Football League ■Southern American South Football League ■Southern California Football League ■Southern Football League ■Southern Indoor Football League ■Southern Kansas Football League ■Southern Plains Football League ■Southern States Football League ■Southwest Football Conference ■Southwest Football League ■Southwest Football League of Texas ■Spring Football League ■Stadium Football League ■Sunshine State Football League
T
■TX/LA Southwest Football Association ■Tennessee Amateur Football League ■Texas International Football League ■Texas United Football Association ■Texas United Football League ■Total Impact Football League ■Tri-State Football League ■Tri-States Football League
U
■U.S. Amateur Football Federation ■U.S. Indoor Football League ■U.S. Inside Football League ■Ultimate Football League ■Ultimate Indoor Football League ■United American Football League ■United Florida Football League ■United Football Alliance League ■United Football Alliance of Texas ■United Football League (1961) ■United Football League of Florida ■United Indoor Football ■United National Gridiron League ■United Professional Football League ■United South Carolina Football League
U cont.
■United South Football League ■United States Amateur Football Federation ■United States Football Alliance ■United States Football League ■United States Independent Football League ■Utah Football League ■Utah Indoor Football League
V
■Virginia-Carolina Football League
W
■Washington Football League ■West Coast Football Association ■West Coast Football League ■West Coast Public Safety Football League ■West Texas Football League ■Western Interprovincial Football Union (WIFU) ■Western States Football League ■Western Washington Football Alliance ■Wild West Football League ■Wisconsin State Football League ■World Football League ■World Football League (2008) ■World Indoor Football League (2007) ■World League of American Football
X
■XFL