| Ardmore Extreme |
Ardmore, Oklahoma |
Minor Professional Football League |
semipro |
active |
| Bloomington Extreme |
Bloomington, Illinois |
Indoor Football League |
professional |
defunct |
| Bloomington Extreme |
Bloomington, Illinois |
United Indoor Football |
professional |
active |
| Edmonton Extreme |
Edmonton, Alberta |
North American Indoor Football League |
professional |
defunct |
| Lehigh Valley Extreme |
Lehigh Valley, Pennsylvania |
United Hockey League |
professional |
defunct |
| Lincoln Extreme |
Lincoln, Nebraska |
Alliance Football League |
semipro |
defunct |
| Nebraska Extreme |
, Nebraska |
American Professional Football League |
professional |
defunct |