| Team name | Location | League | Level | Status |
|---|---|---|---|---|
| Jacksonville Jacks | Jacksonville, Illinois | Illinois-Missouri League | professional | defunct |
| Jacksonville Jacks | Jacksonville, Illinois | Kentucky-Illinois-Tennessee League | professional | defunct |
| Jacksonville Jacks | Jacksonville, Illinois | Northern Association | professional | defunct |
| Jacksonville Jacks | Jacksonville, Illinois | Western Association | professional | defunct |
| Saginaw Jacks | Saginaw, Michigan | Central League | professional | defunct |
| Valley Jacks | Pine Grove, West Virginia | high school | active |