List of NFL champions (1920–1969)

thumb|400px|The 1920 [[Akron Pros were named the first APFA (NFL) champions.|alt=A group of 18 men, 11 standing in back and seven sitting in front. Above the men, centered in the middle of the poster, is text that says "Worlds Champs". Under that is the phrase "Akron Professionals" – the year 1920 is placed between "Akron" and "Professionals".]]

The National Football League champions, prior to the merger between the National Football League (NFL) and American Football League (AFL) in 1970, were determined by two different systems. The National Football League was established on September 17, 1920, as the American Professional Football Association (APFA). The APFA changed its name in 1922 to the National Football League, which it has retained ever since. From 1921 to 1931, the APFA/NFL determined its champion by overall win–loss record, with no playoff games; ties were not counted in the winning percentage total. as part of this deal, the NFL champion from 1966 to 1969 would play the AFL champion in an AFL–NFL World Championship Game in each of the four seasons before the completed merger. The NFL Championship Game was ended after the 1969 season, succeeded by the NFC Championship Game. The Green Bay Packers won the most NFL championships before the merger, winning eleven of the fifty championships. The Packers were also the only team to win three straight championships, an achievement they accomplished twice: from 1929 to 1931 and from 1965 to 1967, The Chicago Bears won a total of eight titles, and the Cleveland Browns, Detroit Lions, and New York Giants each won four. The Bears recorded the largest victory in a championship game, defeating the Washington Redskins 73–0 in the 1940 NFL Championship Game; six other title games ended in a shutout as well. The Philadelphia Eagles recorded two consecutive shutouts in 1948 and 1949. New York City hosted the most championship games (eight), while the highest-attended title game was the 1955 NFL Championship Game, where 85,693 fans showed up in Los Angeles to watch the Browns beat the Rams 38–14.|group=upper-alpha|name=a

!scope="col"|Pct.

!scope="col"|Runner-up

!scope="col"|Wins

!scope="col"|Losses

!scope="col"|Ties

|1921

|Chicago Staleys

|.900

|Buffalo All-Americans

|.900

||group=upper-alpha|name=d

|Chicago Cardinals

|11

|.846

|Pottsville Maroons

|10

|.833

|1926

|Frankford Yellow Jackets

|14

|.933

|Chicago Bears

|12

|.923

|style="text-align:center;"|1939

|bgcolor="#FFCCCC"|Green Bay Packers (5)^

|bgcolor="#B2FFFF"|New York Giants‡

|32,279

|style="text-align:center;"|1951

|bgcolor="#FFCCCC"|Los Angeles Rams (2)^

|bgcolor="#B2FFFF"|Cleveland Browns‡

|57,522

|style="text-align:center;"|1959

|bgcolor="#FFCCCC"|Baltimore Colts (2)^

|bgcolor="#B2FFFF"|New York Giants‡

|57,545

|style="text-align:center;"|1961

|bgcolor="#FFCCCC"|Green Bay Packers (7)^

|bgcolor="#B2FFFF"|New York Giants‡

|39,029