Template:APFA Team Map 1921

Pros

All-Americans

Bulldogs

Cardinals

Staleys

Indians

Panhandles

Triangles

Tigers

Crimson Giants

Packers

Flyers

Brecks

Marines

Brickley Giants

Jeffersons

Independents

Senators

Traveling teams
Celts
Pros
Kardex

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APFA teams

See also: Timeline of the National Football League

1921 APFA season changes:

• Eight new teams: Cincinnati Celts, Evansville Crimson Giants, Green Bay Packers, Louisville Becks, Minneapolis Marines, New York Brickley Giants, Tonawanda Kardex, Washington Senators
• One team left the league: Chicago Tigers