List of last undefeated NFL teams by season

This is a season-by-season breakdown of the last undefeated National Football League (NFL) team. This list indicates the teams who won the most games in a season before suffering their first loss.

Only one team in NFL history has recorded a perfect season: the 1972 Miami Dolphins, who recorded a 14–0 regular season before winning all three of their playoff games, including Super Bowl VII, to finish with a 17–0 record. In addition, before the institution of a championship game, four NFL champions finished the season undefeated: the 1920 Akron Pros, the 1922 and 1923 Canton Bulldogs, and 1929 Green Bay Packers. Since 1972, an urban legend has formed stating that the surviving members of the Dolphins team will open bottles of champagne after the last undefeated team loses; in reality, some members that live close to each other may share a non-alcoholic toast.

The last team in a new season to lose a game has won the Super Bowl twelve times. Before the Super Bowl era, the last undefeated team won fourteen Championship games, four of which were in the AFL. Before playoffs began in the 1933 season, the last undefeated team earned the NFL championship seven times by having the highest winning percentage (ties were not included in calculation). The last team with an unblemished record has made 29 Super Bowl and 26 Championship game appearances.

The Chicago Bears have been the last team undefeated 17 times (the last time was during the 2010 season), and won the Championship 5 times in those years. The next team, the Los Angeles Rams, have been the last undefeated team 12 times as of the 2018 season. The Rams won 2 titles when they were the last unbeaten team. The New York Giants hold the mark for beating the last undefeated team the most times. They have accomplished this 11 times; the last time it happened was in 2010.

Last undefeated team by season When the teams are sorted, all the names of a franchise are grouped together: Bears and Staleys Steelers and Pittsburgh Pirates Titans and Oilers Chiefs and Dallas Texans Redskins, Washington Football Team, and Commanders

+ Color key Perfect season Undefeated season Perfect regular season, lost in the post-season Subsequently won Championship/Super Bowl

+ Playoff AbbreviationDNQ Did not qualify YearTeamWins beforefirst loss First lossFinal season recordPostseason resultRegularPlayoffs Kansas City Chiefs 4 San Francisco 49ers Minnesota Vikings Buffalo Bills 4 New England Patriots 12–5 1–1 Lost Divisional Philadelphia Eagles Denver Broncos 11–6 0–1 Lost Wild Card Kansas City Chiefs 9 Buffalo Bills 15–2 2–1 Lost Super Bowl Philadelphia Eagles 5 New York Jets 11–6 0–1 Lost Wild CardSan Francisco 49ersCleveland Browns 12–5 2–1 Lost Super Bowl Philadelphia Eagles 8 Washington Commanders 14–3 2–1 Lost Super BowlArizona Cardinals 7 Green Bay Packers 11–6 0–1 Lost Wild Card Pittsburgh Steelers11 12–4 0–1 Lost Wild Card San Francisco 49ers 8 Seattle Seahawks 13–3 2–1 Lost Super BowlNew England Patriots Baltimore Ravens 12–4 0–1 Lost Wild Card Los Angeles Rams8 New Orleans Saints 13–3 2–1 Lost Super BowlKansas City Chiefs5 Pittsburgh Steelers 10–6 0–1 Lost Wild CardMinnesota Vikings5 Philadelphia Eagles 8–8 - DNQCarolina Panthers14 Atlanta Falcons 15–1 2–1 Lost Super BowlPhiladelphia Eagles3 10–6 - DNQCincinnati Bengals New England Patriots 10–5–1 0–1 Lost Wild CardArizona Cardinals Denver Broncos 11–5 0–1 Lost Wild CardKansas City Chiefs9 Denver Broncos 11–5 0–1 Lost Wild CardAtlanta Falcons8 New Orleans Saints 13–3 1–1 Lost ConferenceGreen Bay Packers13 Kansas City Chiefs 15–1 0–1 Lost DivisionalChicago Bears3 New York Giants 11–5 1–1 Lost ConferencePittsburgh Steelers Baltimore Ravens 12–4 2–1 Lost Super BowlKansas City Chiefs Indianapolis Colts 10–6 0–1 Lost Wild CardIndianapolis Colts14 New York Jets 14–2 2–1 Lost Super BowlTennessee Titans10 New York Jets 13–3 0–1 Lost DivisionalNew England Patriots18 New York Giants 16–0 2–1 Lost Super BowlIndianapolis Colts9 Dallas Cowboys 12–4 4–0 Won Super BowlIndianapolis Colts13 San Diego Chargers 14–2 0–1 Lost DivisionalPhiladelphia Eagles7 Pittsburgh Steelers 13–3 2–1 Lost Super BowlKansas City Chiefs9 Cincinnati Bengals 13–3 0–1 Lost DivisionalOakland Raiders4 11–5 2–1 Lost Super BowlSan Diego Chargers Denver Broncos 8–8 - DNQ 6 New Orleans Saints 14–2 2–1 Lost Super BowlMinnesota Vikings7 Tampa Bay Buccaneers 11–5 1–1 Lost Conference 6 Tennessee Titans 13–3 3–0 Won Super BowlDenver Broncos13 New York Giants 14–2 3–0 Won Super BowlDenver Broncos6 12–4 4–0 Won Super BowlMinnesota Vikings4 New York Giants 9–7 0–1 Lost Wild CardIndianapolis Colts Buffalo Bills 9–7 0–1 Lost Wild CardKansas City Chiefs San Diego Chargers 9–7 - DNQ 4 Indianapolis Colts 7–9 - DNQDallas Cowboys12–4 3–0 Won Super BowlMiami Dolphins Indianapolis Colts 9–7 0–1 Lost Wild CardSan Diego Chargers6 Denver Broncos 11–5 2–1 Lost Super BowlNew Orleans Saints5 Pittsburgh Steelers 8–8 - DNQMiami Dolphins6 Indianapolis Colts 11–5 1–1 Lost ConferenceWashington Redskins11 Dallas Cowboys 14–2 3–0 Won Super BowlSan Francisco 49ers10 Los Angeles Rams 14–2 1–1 Lost ConferenceNew York Giants Philadelphia Eagles 13–3 3–0 Won Super BowlLos Angeles Rams5 Buffalo Bills 11–5 2–1 Lost ConferenceCincinnati Bengals6 New England Patriots 12–4 2–1 Lost Super BowlChicago Bears4 New Orleans Saints 11–4 0–1 Lost DivisionalChicago Bears6 Minnesota Vikings 14–2 0–1 Lost DivisionalDenver Broncos New York Jets 11–5 2–1 Lost Super BowlChicago Bears12 Miami Dolphins 15–1 3–0 Won Super BowlMiami Dolphins11 San Diego Chargers 14–2 2–1 Lost Super BowlDallas Cowboys7 12–4 0–1Lost Wild CardWashington Redskins4 Dallas Cowboys 8–1 4–0 Won Super BowlPhiladelphia Eagles6 Minnesota Vikings 10–6 0–1Lost Wild CardBuffalo Bills5 11–5 0–1Lost DivisionalTampa Bay Buccaneers5 New York Giants 10–6 1–1Lost ConferenceLos Angeles Rams7 New Orleans Saints 12–4 1–1Lost ConferencePittsburgh Steelers14–2 3–0 Won Super BowlDallas Cowboys8 12–2 3–0 Won Super BowlMinnesota Vikings6–0–1 Chicago Bears 11–2–1 2–1 Lost Super BowlMinnesota Vikings1012–2 0–1Lost Divisional 7 Dallas Cowboys 10–4 0–1Lost DivisionalMinnesota Vikings9 Atlanta Falcons 12–2 2–1 Lost Super BowlMiami Dolphins1714–0 3–0 Won Super BowlWashington Redskins5 Kansas City Chiefs 9–4–1 0–1Lost DivisionalLos Angeles Rams39–4–1 - DNQDenver Broncos 5–8–1 - DNQDetroit Lions10–4 0–1Lost Divisional1969Oakland Raiders (AFL)6–0–1 Cincinnati Bengals 12–1–1 1–1Lost ConferenceLos Angeles Rams11 Minnesota Vikings 11–3 0–1Lost Divisional1968Oakland Raiders (AFL)4 San Diego Chargers 12–2 1–1Lost ConferenceDallas Cowboys6 Green Bay Packers 12–2 0–1Lost DivisionalLos Angeles Rams 10–3–1 - DNQ1967San Diego Chargers (AFL)5–0–1 8–5–1 - DNQ 11–0–2 Los Angeles Rams 11–1–2 - DNQ1966New York Jets (AFL)4–0–16–6–2 - DNQ 5–0–18–5–1 - DNQ1965San Diego Chargers (AFL)5–0–2 9–2–3 0–1Lost ChampionshipGreen Bay Packers6 Chicago Bears 10–3–1 2–0 Won Championship1964Buffalo Bills (AFL)9 12–2 1–0 Won Championship 3–0–1 9–3–2 - DNQCleveland Browns Pittsburgh Steelers 10–3–1 1–0 Won Championship1963San Diego Chargers (AFL)3 Denver Broncos 11–3 1–0 Won ChampionshipCleveland Browns6 New York Giants 10–4 - DNQ 1962 Kansas City Chiefs Dallas Texans (AFL)3 San Diego Chargers 11–3 1–0 Won ChampionshipGreen Bay Packers10 Detroit Lions 13–1 1–0 Won Championship1961San Diego Chargers (AFL)1112–2 0–1Lost ChampionshipDallas Cowboys2 Cleveland Browns 4–9–1 - DNQPhiladelphia Eagles 10–4 - DNQDetroit Lions 8–5–1 - DNQ1960Denver Broncos (AFL)24–9–1 - DNQ Tennessee Titans Houston Oilers (AFL) 10–4 1–0 Won ChampionshipNew York Giants3–0–1 6–4–2 - DNQGreen Bay Packers3 Los Angeles Rams 7–5 - DNQ 6 New York Giants 9–3 1–0 Won Championship 3 Detroit Lions 7–5 - DNQCleveland Browns Philadelphia Eagles 9–2–1 0–1Lost ChampionshipDetroit Lions69–3 - DNQ 3 Chicago Bears 5–6–1 - DNQLos Angeles Rams Green Bay Packers 8–3–1 0–1 Lost ChampionshipSan Francisco 49ers4–0–1 Chicago Bears 7–4–1 - DNQCleveland Browns11 Philadelphia Eagles 11–1 0–1 Lost ChampionshipSan Francisco 49ers5 Chicago Bears 7–5 - DNQNew York Giants3–0–1 Cleveland Browns 9–2–1 - DNQNew York Giants3 Pittsburgh Steelers 10–3 - DNQ 6 Philadelphia Eagles 8–2–2 0–1Lost Championship Chicago Bears4 Philadelphia Eagles 10–2 - DNQ 3 Los Angeles Rams 9–3 1–0 Won Championship Washington Redskins3–0–1 Philadelphia Eagles 5–5–1 - DNQ Chicago Bears New York Giants 8–2–1 1–0 Won Championship 4 Philadelphia Eagles 9–1 1–0 Won Championship Philadelphia Eagles5–0–2 Chicago Bears 7–1–2 - DNQ Chicago Bears7–0–1 8–1–1 1–0 Won Championship Chicago Bears11 11–0 0–1Lost Championship New York Giants5 Brooklyn Dodgers 8–3 0–1Lost Championship Chicago Bears Green Bay Packers 10–1 2–0 Won Championship Washington Redskins7 Brooklyn Dodgers 9–2 0–1Lost ChampionshipNew York Giants5–0–1 Detroit Lions 9–1–1 0–1Lost Championship Washington Redskins2–0–1 New York Giants 6–3–2 - DNQ Chicago Bears3 6–5 - DNQ Chicago Bears5–0–1 Green Bay Packers 9–1–1 0–1Lost Championship Chicago Bears6 Green Bay Packers 9–3 - DNQ 2–0–1 6–4–2 - DNQ Chicago Bears13 New York Giants 13–0 0–1Lost Championship Chicago Bears6 10–2–1 1–0 Won Championship Green Bay Packers8–0–1 New York Giants 10–3–1 zone 2 2nd place Green Bay Packers9 12–2 z] Champion Green Bay Packers8 10–3–1 z] Champion Green Bay Packers12–0–112–0–1 z] ChampionFrankford Yellow Jackets3 New York Yankees 11–3–2 zone 2 2nd place Detroit Wolverines Frankfort Yellow Jackets 7–2–1 zone 3 3rd place Chicago Bears2–0–1 Green Bay Packers 7–5–1 zone 5 5th place Chicago Bears5–0–1 New York Yankees 9–3–2 zone 3 3rd place Chicago Bears11–0–2 Frankfort Yellow Jackets 12–1–3 zone 2 2nd placeDetroit Panthers6–0–2 Chicago Bears 8–2–2 zone 3 3rd placeCleveland Bulldogs5–0–1 Frankfort Yellow Jackets 7–1–1 z] ChampionCanton Bulldogs11–0–111–0–1 z] ChampionCanton Bulldogs10–0–210–0–2 z] ChampionBuffalo All-Americans9–0–29–1–2 zone 2 The Staley Swindle 2nd placeAkron Pros8–0–38–0–3 z] Champion YearTeamWins beforefirst loss First lossRegularPlayoffsPostseason resultFinal season record Note 1: The NFL did not have playoff games until the 1933 season. Note 2: Buffalo and Chicago both had 9–1 records (ties not counted in standings then). Chicago was awarded the championship when the league instituted a new tiebreaker rule at the end of the season.

List of last undefeated NFL teams by season

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