| Team name | Location | League | Level | Status |
|---|---|---|---|---|
| Alpha Mastodons | Alpha, Michigan | high school | defunct | |
| Cohes Mastodons | Albany, New York | New York State Professional League | professional | defunct |
| Indiana University-Purdue University Fort Wayne Mastodons | Fort Wayne, Indiana | college | active | |
| South Jersey Mastodons | , New Jersey | Atlantic Coast Football Alliance | amateur | active |