| Akron Pros/Indians |
8/20/20 |
1920-22/1923-26 |
| Arizona Cardinals |
|
| Atlanta Falcons |
6/30/65 |
1966-present |
| Baltimore Colts |
12/28/46 (AAFC) |
1947-49 (AAFC), 1950 (NFL) |
| Baltimore/Indianapolis Colts |
1/23/53 |
1953-1983/1984-present |
 moved to Indianapolis, 3/28/84 |
| Baltimore Ravens |
2/9/96 |
1996-present |
| Boston Braves/Redskins/ Washington Redskins |
7/9/32 |
1932/1933-36/1937-present |
| Boston Bulldogs |
(see Pottsville Maroons) |
| Boston/New England Patriots |
11/22/59 (AFL) |
1960-69 (AFL), 1970 (NFL)/1971-present (NFL) |
| Boston Yanks |
6/19/43 |
1944-48 |
| Brooklyn Dodgers/Tigers |
7/12/30
(purchased Dayton Triangles franchise) |
1930-1943/1944 |
| merged with Boston Yanks, 1945 |
| Brooklyn Lions |
7/10/26 |
1926 |
| Buffalo All-Americans/Bisons/Rangers/Bisons |
8/20/20 |
1920-23/1924-25/1926/ 1927, 1929 |
| Buffalo Bills |
10/28/59 (AFL) |
1960-69 (AFL), 1970-present (NFL) |
| Canton Bulldogs |
8/20/20 |
1920-23, 1925-26 |
| Carolina Panthers |
10/26/93 |
1995-present |
| Chicago Bears |
(see Decatur Staleys) |
|
| Chicago Cardinals/St. Louis/ Phoenix/Arizona |
9/17/20 |
1920-1959/1960-1987/1988-1993/1994-present |
| Chicago Tigers |
1920 |
1920 |
| Cincinnati Bengals |
5/23/67 (AFL) |
1968-69 (AFL), 1970-present (NFL) |
| Cincinnati Celts |
1921 |
1921 |
| Cincinnati Reds |
7/8/33 |
1933-34 |
| merged w/ St. Louis Gunners for the last half of 1934 |
| Cleveland Browns |
6/4/44 (AAFC) |
1946-49 (AAFC),
1950-present (NFL) |
| Inactive, 1996-1998 |
| Cleveland Tigers/Indians |
8/20/20 |
1920/1921 |
| Cleveland Indians/Bulldogs |
7/8/23 |
1923/1924-25, 1927 |
| Cleveland Indians |
7/12/31 |
1931 |
| Cleveland/Los Angeles/St. Louis Rams |
2/12/37 |
1937-42, 1944-45/1946-1994/ 1995-present |
| Columbus Panhandles/Tigers |
1920 |
1920-22/1923-26 |
| Dallas Cowboys |
1/28/60 |
1960-present |
| Dallas Texans |
1/24/52 |
1952 |
franchise was awarded after Dallas purchased assets of NY Yanks from the NFL
|
| Dallas Texans/Kansas City Chiefs |
8/14/59 (AFL) |
1960-62/1963-69 (AFL), 1970-present (NFL) |
| Dayton Triangles |
8/20/20 |
1920-29 |
| 1930 Brooklyn purchased Dayton franchise |
| Denver Broncos |
8/14/59 (AFL) |
1960-69 (AFL), 1970-present (NFL) |
| Decatur Staleys/Chicago Staleys/Chicago Bears |
9/17/20 |
1920/1921/1922-present |
| Detroit Heralds |
1920 |
1920 |
| Detroit Lions |
(see Portsmouth Spartans) |
| Detroit Panthers |
8/1/25 |
1925-26 |
| Detroit Tigers |
6/18/21 |
1921 |
| Detroit Wolverines |
8/17/28 |
1928 |
| Duluth Kelleys/Eskimos |
7/28/23 |
1923-25/1926-27 |
| 7/27/29 - Duluth franchise was transferred to Orange |
| Evansville Crimson-Giants |
8/27/21 |
1921-22 |
| Frankford Yellowjackets |
7/25/24 |
1924-31 |
| Green Bay Packers |
8/27/21 |
1921-present |
| Hammond Pros |
8/20/20 |
1920-26 |
| Hartford Blues |
7/10/26 |
1926 |
| Houston/Tennessee Oilers/Tennessee Titans |
8/14/59 (AFL) |
1960-69 (AFL), 1970-1996 (NFL)/1997-1998/1999-present |
| Houston Texans |
10/6/99 |
2002-present |
| Indianapolis Colts |
(see Baltimore Colts) |
| Jacksonville Jaguars |
11/30/93 |
1995-present |
| Kansas City Blues/Cowboys |
1/27/24 |
1924/1925-26 |
| Kansas City Chiefs |
(see Dallas Texans) |
| Kenosha Maroons |
1924 |
1924 |
| Los Angeles Buccaneers |
7/11/26 |
1926 |
| Los Angeles/San Diego Chargers |
8/14/59 (AFL) |
1960/1961-69 (AFL), 1970-present (NFL) |
| Los Angeles Raiders |
(see Oakland Raiders) |
| Los Angeles Rams |
(see Cleveland Rams) |
| Louisville Brecks/Colonels |
1921 |
1921-23/1926 |
| Miami Dolphins |
8/16/65 (AFL) |
1966-69 (AFL), 1970-present (NFL) |
| Milwaukee Badgers |
6/24/22 |
1922-26 |
| Minneapolis Marines/Redjackets |
8/27/21 |
1921-24/1929-30 |
| Minnesota Vikings |
1/28/60 |
1961-present |
| Muncie Flyers |
9/17/20 |
1920-21 |
| New England Patriots |
(see Boston Patriots) |
| Newark Tornadoes |
(see Orange Tornadoes) |
| New Orleans Saints |
11/1/66 |
1967-present |
| New York Bulldogs/Yanks |
1/21/49 |
1949/1950-51 |
| New York Giants |
1921 |
1921 |
| New York Giants |
8/1/25 |
1925-present |
| New York Jets |
(see New York Titans) |
| New York Yankees |
9/4/27 |
1927-28 |
| New York Titans/Jets |
8/14/59 (AFL) |
1960-62/1963-69 (AFL), 1970-present |
| Oakland/Los Angeles/Oakland Raiders |
1/30/60 (AFL) |
1960-69 (AFL), 1970-1981/1982-1994/1995- Present (NFL) |
| Oorang Indians |
6/24/22 |
1922-23 |
| Orange/Newark Tornadoes |
7/27/29 |
1929/1930 |
| the Duluth franchise sold and transferred to Orange and one year later to Newark |
| Philadelphia Eagles |
7/8/33 |
1933-present |
| Pittsburgh Pirates/Steelers |
7/8/33 |
1933-39/1940-present |
| Portsmouth Spartans/Detroit Lions |
7/12/30 |
1930-33/1934-present |
| 6/30/34 - the Portsmouth franchise was sold and moved to Detroit |
| Pottsville Maroons/Boston Bulldogs |
8/1/25 |
1925-28/1929 |
| 7/28/29 - the Pottsville team relocated to Boston |
| Providence Steam Roller |
8/1/25 |
1925-31 |
| Racine Legion/Tornadoes |
6/24/22 |
1922-24/1926 |
| Rochester Jeffersons |
8/20/20 |
1920-25 |
| Rock Island Independents |
9/17/20 |
1920-25 |
| St. Louis All-Stars |
7/28/23 |
1923 |
| St. Louis Cardinals |
|
| St. Louis Gunners |
11/6/34 |
1934 (partial season) |
| purchased Cincinnati franchise |
| St. Louis Rams |
(see Cleveland Rams) |
| San Diego Chargers |
(see Los Angeles Chargers) |
| San Francisco 49ers |
6/4/44 (AAFC) |
1946-49 (AAFC), 1950-present (NFL) |
| Seattle Seahawks |
6/4/74 |
1976-present |
| Staten Island Stapletons/Stapes |
7/27/29 |
1929-30/1931-32 |
| the Brooklyn franchise was transferred to Staten Island |
| Tampa Bay Buccaneers |
4/24/74 |
1976-present |
| Tennessee Oilers |
(see Houston Oilers) |
| Tennessee Titans |
(see Houston Oilers) |
| Toledo Maroons |
8/20/22 |
1922-23 |
| Tonawanda Kardex |
8/27/21 |
1921 |
| Washington Senators |
1921 |
1921 |
| Washington Redskins |
(see Boston Braves) |
