INDEX

PROFESSIONAL LEAGUES
National Football League NFC East * AFC East NFC North * AFC North NFC South * AFC South NFC West * AFC West
Canadian Football League
United Football League
Defunct professional leagues
Alliance of American Football (2019)
Arena Football League (1987-2019)
NFL Europa/ WLAF (1991-2007)
United Football League (2009-2012)
USFL (1983-1985)
USFL (2022-2023)
World Football League (1974-1975)
XFL (2001)
XFL (2020; 2023)

NCAA
Division I - Football Bowl Subdivision
American Athletic Conf.
Atlantic Coast Conf.
Big Ten Conf.
Big 12 Conf.
Conference USA
Mid-American Conf.
Mountain West Conf.
Pac 12 Conf.
Southeastern Conf.
Sun Belt Conf.
Independents
Division I - Football Championship Subdivision
Big Sky Conf.
Big South-OVC Football Assoc.
Coastal Athletic Assoc. Football Conf.
Ivy League
Mid-Eastern Athletic Conf.
Missouri Valley Football Conf.
Northeast Conf.
Patriot League
Pioneer Football League
Southern Conf.
Southland Conf.
Southwestern Athletic Conf.
United Athletic Conf.
Independents
Division II
Central Intercollegiate Athletic Assoc.
Great American Conf.
Great Lakes Intercollegiate Athl. Conf.
Great Lakes Valley Conf.
Great Midwest Athl. Conf.
Gulf South Conf.
Lone Star Conf.
Mid-America Intercollegiate Athletic Assoc.
Mountain East Conf.
Northeast 10 Conf.
Northern Sun Intercollegiate Conf.
Pennsylvania State Athletic Conf.
Rocky Mountain Athletic Conf.
South Atlantic Conf.
Southern Intercollegiate Athletic Conf.
Independents
Division III
Region I
Conference of New England
Eastern Collegiate Football Conf.
Massachusetts State Collegiate Athl. Conf.
Middle Atlantic Conf.
New England Small College Athl. Conf.
New England Women's and Men's Athl. Conf.
Region II
Centennial Conf.
Empire 8 Conf.
Landmark Conf.
Liberty League
New Jersey Athl. Conf.
Presidents' Athl Conf.
Region III
American Southwest Conf.
Old Dominion Athletic Conf.
Southern Athletic Association
Southern Collegiate Athletic Conf.
USA South Athletic Conf.
Region IV
Heartland Collegiate Athl. Conf.
Michigan Intercollegiate Athl. Assoc.
North Coast Athl. Conf.
Ohio Athletic Conf.
Region V
American Rivers Conf.
College Conf. of Illinois & Wisconsin
Midwest Conf.
Northern Athletics Collegiate Conf.
Region VI
Minnesota Intercollegiate Athl. Conf.
Northwest Conf.
Southern California Intercollegiate Athl. Conf.
Upper Midwest Athl. Conf.
Wisconsin Intercollegiate Athl. Conf.
NCAA Division III independents

NAIA
Appalachian Athl. Conf.
Frontier Conf.
Great Plains Athl. Conf.
Heart of America Athl. Conf.
Kansas Collegiate Athl. Conf.
Mid-South Conf.
Mid-States Football Assoc.
North Star Athl. Assoc.
Sooner Athl. Conf.
The Sun Conference
Independents

"Countable Opponent" College Teams

U Sports (Canadian colleges)
Atlantic University Sport
Réseau du sport étudiant du Québec
Ontario University Athletics
Canada West Universities Athl. Assoc.
Junior Colleges
NJCAA
Iowa C.C. Athletic Conf.
Kansas Jayhawk C.C. Conf.
Minnesota College Athletic Conf.
Mississippi Assoc. of Community Colleges Conf.
Southwest Junior College Football Conf.
Independents
CALIFORNIA C.C. ATHLETIC ASSOC.
Northern California FB. Conf.
Southern California FB. Assoc.
Future College Teams
Defunct College Teams
Major colleges
Small colleges
Junior colleges
Canadian colleges
The College Football Centennial ("100") Logo
Some unidentified helmet designs