| Abbreviation | Definition |
|---|---|
| AFC | American Football Conference |
| AFC | Arsenal Football Club |
| AFFA | Associated Football Franchises of America |
| AFL | American Football League |
| AFL | Arena Football League |
| AFL | Australian Football League |
| AFROS | America's Finest Receivers On Sundays |
| AISL | American Indoor Soccer League |
| ARI | Arizona Cardinals |
| ATL | Atlanta Falcons |
| AVFC | Arizona Vikings Fan Club |
| AVFC | Aston Villa Football Club |
| BAC | Baltimore Colts |
| BAL | Baltimore Ravens |
| BILLS | Boy, I Love Losing Super Bowls |
| BKN | Brooklyn Dodgers |
| BKT | Brooklyn Tigers |
| BLC | Baltimore Colts |
| BOS | Boston Patriots |
| BSR | Boston Redskins |