Liste over NFL-sesonger

National Football League (NFL) er en profesjonell amerikansk fotballiga i USA og det høyeste nivået av amerikansk fotball i verden., Ligaen ble stiftet som American Professional Football Association (APFA) i 1920, men skiftet navn til National Football League før 1922-sesongen. Til å begynne med ble ligamesteren bestemt basert på sesongresultatene, før et sluttspillsystem ble implementert i 1933 som kulminerte i et NFL Championship Game frem til 1966. Etter sammenslåingen av AFL og NFL ble det første Super Bowl avholdt i 1967 mellom de beste lagene fra hver av ligaene for å avgjøre mesteren. Dette har forblitt den siste kampen i en sesong siden sammenslåingen var ferdigstilt i 1970. Etter sammenslåingen ble resultatene fra alle AFL Championship Games samt ligaens rekorder inkludert i NFLs historiebøker, og lagene ble delt opp i American Football Conference (AFC) and the National Football Conference (NFC).

Siden 2002 har ligaen bestått av 32 lag. Siden 2021 har sesongene startet med en sesongoppkjøring som varer i tre uker i august, fulgt av et seriespill på 18 uker fra september til begynnelsen av januar hvor hvert lag spiller 17 kamper og har én friuke. Etter seriespillet går syv lag fra hver conference (fire divisjonsmestere og tre wildcards) til sluttspillet, en turnering som avsluttes med Super Bowl i februar hvor conferencemesterne fra AFC og NFC møtes.

Tidlige år (1920–1932) I ligaens tidlige år, fra 1920 til 1932, ble ligatittelen gitt til laget med best sesongresultat. Til å begynne med spilte lag varierende antall kamper i løpet av sesong, ofte mot lag som ikke var medlemmer av ligaen; dette førte til at tittelen i 1920 ble avgjort under et eiermøte etter sesongen, at 1921-tittelen ble tudelt etter en kontroversiell tiebreaker, en omstridt ligatittel i 1925, og en spontan innendørs sluttspillkamp i 1932.

SesongAntalllagLigamesterRef. 192014Akron Pros 192121Chicago Staleys18Canton Bulldogs20Canton Bulldogs18Cleveland Bulldogs20Chicago Cardinals22Frankford Yellow Jackets12New York Giants10Providence Steam Roller12Green Bay Packers 11Green Bay Packers10Green Bay Packers8Chicago Bears

1933–1959 I 1933 ble lagene fordelt på Eastern og Western Division. I 1950 ble disse omdøpt American og national Conference etter at All-America Football Conference (AAFC) ble innlemmet i NFL, og til Eastern og Western Conference i 1953. Lagene som endte på førsteplass i divisjonene/conferencene i seriespillet møttes deretter i NFL Championship Game. Dersom to lag hadde samme sesongresultat i sin divisjon/conference etter seriespillet arrangerte ligaen en sluttspillkamp for å avgjøre hvilket lag som gikk videre til mesterskapskampen.2021 NFL Record & Fact Book, s. 351–353.

SesongAntalllagDivision/Conference-mesterNFL Championship GameRef.Eastern Division (1933–1949)American Conference (1950–1952)Eastern Conference (1953–1959)Western Division (1933–1949)National Conference (1950–1952)Western Conference (1953–1959)ÅrMester10New York GiantsChicago Bears1933Chicago Bears11New York GiantsChicago Bears1934New York Giants9New York GiantsDetroit Lions1935Detroit Lions9Boston RedskinsGreen Bay Packers1936Green Bay Packers10Washington RedskinsChicago Bears1937Washington Redskins10New York GiantsGreen Bay Packers1938New York Giants10New York GiantsGreen Bay Packers1939Green Bay Packers10Washington RedskinsChicago Bears1940Chicago Bears10New York GiantsChicago Bears1941Chicago Bears10Washington RedskinsChicago Bears1942Washington Redskins8Washington RedskinsChicago Bears1943Chicago Bears10New York GiantsGreen Bay Packers1944Green Bay Packers10Washington RedskinsCleveland Rams1945Cleveland Rams10New York GiantsChicago Bears1946Chicago Bears10Philadelphia EaglesChicago Cardinals1947Chicago Cardinals10Philadelphia EaglesChicago Cardinals1948Philadelphia Eagles10Philadelphia EaglesLos Angeles Rams1949Philadelphia Eagles13Cleveland BrownsLos Angeles Rams1950Cleveland Browns12Cleveland BrownsLos Angeles Rams1951Los Angeles Rams12Cleveland BrownsDetroit Lions1952Detroit Lions12Cleveland BrownsDetroit Lions1953Detroit Lions12Cleveland BrownsDetroit Lions1954Cleveland Browns12Cleveland BrownsLos Angeles Rams1955Cleveland Browns12New York GiantsChicago Bears1956New York Giants12Cleveland BrownsDetroit Lions1957Detroit Lions12New York GiantsBaltimore Colts1958Baltimore Colts12New York GiantsBaltimore Colts1959Baltimore Colts

Krigen med AFL (1960–1969) Den rivaliserende ligaen American Football League (AFL) startet opp i 1960 med to divisjoner (Eastern og Western) og et AFL Championship Game. Etter en avtale om sammenslåing av NFL og AFL ble det første Super Bowl avholdt etter 1966-sesongen for å utnevne en felles ligamester. I 1967 introduserte NFL en sluttspillturnering på fire kamper, og AFL fulgte opp med det samem i 1969.2021 NFL Record & Fact Book, pp. 354–356.

NFLAFLSuper Bowl(1966–1969)Ref.SesongAntalllagConference championsNFL Championship GameSesongAntalllagDivisjonsmestreAFL Championship GameKampMestereEasternConferenceWesternConferenceÅrMesterEasternDivisionWesternDivisionÅrMester13Philadelphia EaglesGreen Bay Packers1960Philadelphia Eagles19608Houston OilersLos Angeles Chargers1960Houston Oilersrowspan="6" colspan="2" 14New York GiantsGreen Bay Packers1961Green Bay Packers19618Houston OilersSan Diego Chargers1961Houston Oilers14New York GiantsGreen Bay Packers1962Green Bay Packers19628Houston OilersDallas Texans1962Dallas Texans14New York GiantsChicago Bears1963Chicago Bears19638Boston PatriotsSan Diego Chargers1963San Diego Chargers14Cleveland BrownsBaltimore Colts1964Cleveland Browns19648Buffalo BillsSan Diego Chargers1964Buffalo Bills14Cleveland BrownsGreen Bay Packers1965Green Bay Packers19658Buffalo BillsSan Diego Chargers1965Buffalo Bills15Dallas CowboysGreen Bay Packers1966Green Bay Packers19669Buffalo BillsKansas City Chiefs1966Kansas City ChiefsIGreen Bay Packers16Dallas CowboysGreen Bay Packers1967Green Bay Packers19679Houston OilersOakland Raiders1967Oakland RaidersIIGreen Bay Packers16Cleveland BrownsBaltimore Colts1968Baltimore Colts196810New York JetsOakland Raiders1968New York JetsIIINew York Jets16Cleveland BrownsMinnesota Vikings1969Minnesota Vikings196910New York JetsOakland Raiders1969Kansas City ChiefsIVKansas City Chiefs

Moderne æra (1970–nå) Sammenslåingn av AFL og NFL ble fullført før 1970-sesongen. Lagene ble fordelt på American Football Conference (AFC) og National Football Conference (NFC). De to conferencemesterne spilte deretter i Super Bowl for å avgjøre NFL-mesteren.2021 NFL Record & Fact Book, s. 356.

SesongAntalllagSeriespillSluttspillSuper BowlRef.AntallkamperFørste seed i AFCFørste seed i NFCSluttspillAFC-mestereNFC-mestereKampMestere2614 — —1970–71Baltimore ColtsDallas CowboysVBaltimore Colts2614 — —1971–72Miami DolphinsDallas CowboysVIDallas Cowboys2614 — —1972–73Miami DolphinsWashington RedskinsVIIMiami Dolphins2614 — —1973–74Miami DolphinsMinnesota VikingsVIIIMiami Dolphins2614 — —1974–75Pittsburgh SteelersMinnesota VikingsIXPittsburgh Steelers2614Pittsburgh SteelersMinnesota Vikings1975–76Pittsburgh SteelersDallas CowboysXPittsburgh Steelers2814Oakland RaidersMinnesota Vikings1976–77Oakland RaidersMinnesota VikingsXIOakland Raiders2814Denver BroncosDallas Cowboys1977–78Denver BroncosDallas CowboysXIIDallas Cowboys2816Pittsburgh SteelersLos Angeles Rams1978–79Pittsburgh SteelersDallas CowboysXIIIPittsburgh Steelers2816San Diego ChargersDallas Cowboys1979–80Pittsburgh SteelersLos Angeles RamsXIVPittsburgh Steelers2816San Diego ChargersAtlanta Falcons1980–81Oakland RaidersPhiladelphia EaglesXVOakland Raiders2816Cincinnati BengalsSan Francisco 49ers1981–82Cincinnati BengalsSan Francisco 49ersXVISan Francisco 49ers289Los Angeles RaidersWashington Redskins1982–83Miami DolphinsWashington RedskinsXVIIWashington Redskins2816Los Angeles RaidersWashington Redskins1983–84Los Angeles RaidersWashington RedskinsXVIIILos Angeles Raiders2816Miami DolphinsSan Francisco 49ers1984–85Miami DolphinsSan Francisco 49ersXIXSan Francisco 49ers2816Los Angeles RaidersChicago Bears1985–86New England PatriotsChicago BearsXXChicago Bears2816Cleveland BrownsNew York Giants1986–87Denver BroncosNew York GiantsXXINew York Giants2815Denver BroncosSan Francisco 49ers1987–88Denver BroncosWashington RedskinsXXIIWashington Redskins2816Cincinnati BengalsChicago Bears1988–89Cincinnati BengalsSan Francisco 49ersXXIIISan Francisco 49ers2816Denver BroncosSan Francisco 49ers1989–90Denver BroncosSan Francisco 49ersXXIVSan Francisco 49ers2816Buffalo BillsSan Francisco 49ers1990–91Buffalo BillsNew York GiantsXXVNew York Giants2816Buffalo BillsWashington Redskins1991–92Buffalo BillsWashington RedskinsXXVIWashington Redskins2816Pittsburgh SteelersSan Francisco 49ers1992–93Buffalo BillsDallas CowboysXXVIIDallas Cowboys2816Buffalo BillsDallas Cowboys1993–94Buffalo BillsDallas CowboysXXVIIIDallas Cowboys2816Pittsburgh SteelersSan Francisco 49ers1994–95San Diego ChargersSan Francisco 49ersXXIX San Francisco 49ers3016Kansas City ChiefsDallas Cowboys1995–96Pittsburgh SteelersDallas CowboysXXXDallas Cowboys3016Denver BroncosGreen Bay Packers1996–97New England PatriotsGreen Bay PackersXXXIGreen Bay Packers3016Kansas City ChiefsSan Francisco 49ers1997–98Denver BroncosGreen Bay PackersXXXIIDenver Broncos3016Denver BroncosMinnesota Vikings1998–99Denver BroncosAtlanta FalconsXXXIII Denver Broncos3116Jacksonville JaguarsSt. Louis Rams1999–2000Tennessee TitansSt. Louis RamsXXXIVSt. Louis Rams3116Tennessee TitansNew York Giants2000–01Baltimore RavensNew York GiantsXXXVBaltimore Ravens3116Pittsburgh SteelersSt. Louis Rams2001–02New England PatriotsSt. Louis RamsXXXVINew England Patriots3216Oakland RaidersPhiladelphia Eagles2002–03Oakland RaidersTampa Bay BuccaneersXXXVIITampa Bay Buccaneers3216New England PatriotsPhiladelphia Eagles2003–04New England PatriotsCarolina PanthersXXXVIIINew England Patriots3216Pittsburgh SteelersPhiladelphia Eagles2004–05New England PatriotsPhiladelphia EaglesXXXIXNew England Patriots3216Indianapolis ColtsSeattle Seahawks2005–06Pittsburgh SteelersSeattle SeahawksXLPittsburgh Steelers3216San Diego ChargersChicago Bears2006–07Indianapolis ColtsChicago BearsXLIIndianapolis Colts3216New England PatriotsDallas Cowboys2007–08New England PatriotsNew York GiantsXLIINew York Giants3216Tennessee TitansNew York Giants2008–09Pittsburgh SteelersArizona CardinalsXLIIIPittsburgh Steelers3216Indianapolis ColtsNew Orleans Saints2009–10Indianapolis ColtsNew Orleans SaintsXLIVNew Orleans Saints3216New England PatriotsAtlanta Falcons2010–11Pittsburgh SteelersGreen Bay PackersXLVGreen Bay Packers3216New England PatriotsGreen Bay Packers2011–12New England PatriotsNew York GiantsXLVINew York Giants3216Denver BroncosAtlanta Falcons2012–13Baltimore RavensSan Francisco 49ersXLVIIBaltimore Ravens3216Denver BroncosSeattle Seahawks2013–14Denver BroncosSeattle SeahawksXLVIIISeattle Seahawks3216New England PatriotsSeattle Seahawks2014–15New England PatriotsSeattle SeahawksXLIXNew England Patriots3216Denver BroncosCarolina Panthers2015–16Denver BroncosCarolina Panthers50Denver Broncos3216New England PatriotsDallas Cowboys2016–17New England PatriotsAtlanta FalconsLINew England Patriots3216New England PatriotsPhiladelphia Eagles2017–18New England PatriotsPhiladelphia EaglesLIIPhiladelphia Eagles3216Kansas City ChiefsNew Orleans Saints2018–19New England PatriotsLos Angeles RamsLIIINew England Patriots3216Baltimore RavensSan Francisco 49ers2019–20Kansas City ChiefsSan Francisco 49ersLIVKansas City Chiefs3216Kansas City ChiefsGreen Bay Packers2020–21Kansas City ChiefsTampa Bay BuccaneersLVTampa Bay Buccaneers3217Tennessee TitansGreen Bay Packers2021–22Cincinnati BengalsLos Angeles RamsLVILos Angeles Rams3217Kansas City ChiefsPhiladelphia Eagles2022–23Kansas City ChiefsPhiladelphia EaglesLVIIKansas City Chiefs3217Baltimore RavensSan Francisco 49ers2023–24Kansas City ChiefsSan Francisco 49ersLVIIIKansas City Chiefs3217Kansas City ChiefsDetroit Lions2024–25Kansas City ChiefsPhiladelphia EaglesLIXPhiladelphia Eagles