Fans, we need your help. Please send in missing title reigns, locations, dates and/or notes if you have them.
This title was formerly known as the MO/IL Heavyweight Championship.
| WON BY | LOCATION | DATE | NOTES |
| Rob Phillips | Affton, Mo. | May-85 | |
| Ed Lewis | Affton, Mo. | Aug-85 | |
| Giant Assassin | Saint Louis, Mo. | Feb-86 | |
| Rob Phillips | Salem, Mo. | Jul-86 | |
| Ron Brewer | Saint Louis, Mo. | Sep-86 | |
| Stan Hurley | Affton, Mo. | Jan-87 | |
| Giant Assassin | Affton, Mo. | Mar-87 | |
| Ron Powers | Saint Louis, Mo. | Feb-88 | |
| Giant Assassin | Saint Louis, Mo. | Apr-88 | |
| Ron Powers | Saint Louis, Mo. | Jul-88 | |
| Steve Stunning | Cahokia, Ill. | Nov-88 | |
| Giant Assassin | Saint Louis, Mo. | Jan-89 | |
| Ed Smith | Saint Louis, Mo. | Jul-89 | |
| Giant Assassin | Saint Louis, Mo. | Oct-89 | |
| Steve Sharp | Saint Louis, Mo. | Apr-90 | |
| Chris Giacin | Saint Louis, Mo. | Jul-90 | |
| Giant Assassin | Saint Louis, Mo. | Nov-90 | |
| Chris Giacin | Saint Louis, Mo. | Feb-91 | |
| Giant Assassin | Jennings, Mo. | Apr-91 | |
| Tom Sullivan | Saint Louis, Mo. | Nov-91 | |
| Giant Assassin | Saint Louis, Mo. | May-92 | |
| Tom Sullivan | Saint Clair, Mo. | Aug-92 | |
| Giant Assassin | Saint Louis, Mo. | Feb-93 | |
| VACANT | Apr-93 | ||
| Tom Sullivan | Saint Louis, Mo. | Jun-93 | |
| … | |||
| Danny Boy Hawkins | Apr-96 | ||
| Keith Smith | 1996 | ||
| Danny Boy Hawkins | 6/22/96 | ||
| … | |||
| John Blackheart | May-97 | ||
| … | |||
| Gambler | Dec-98 | ||
| … | |||
| Gary Jackson | 2005 | ||
| Phil E. Blunt | Saint Louis, Mo. | 3/12/05 | |
| Jerome Cody | Saint Louis, Mo. | 7/9/05 | |
| Gary Jackson | Saint Louis, Mo. | 12/3/05 | |
| Mr. Bibbs | Saint Louis, Mo. | 4/15/06 | 3-way w/ Jerome Cody |
| Jerome Cody | Saint Louis, Mo. | 5/13/06 | |
| Jeremy Lightfoot | Saint Louis, Mo. | 7/8/06 | |
| Shaft | Saint Louis, Mo. | 9/8/07 | |
| Gary Jackson | Saint Louis, Mo. | 11/3/07 | 3-way w/ Jeremy Lightfoot |
| Kevin X | Saint Louis, Mo. | 1/3/08 | |
| Jerome Cody | East Carondelet, Ill. | 2/16/08 | |
| Kevin X | Saint Louis, Mo. | 5/10/08 | |
| Gary Jackson | Saint Louis, Mo. | 10/4/08 | |
| Shaft | Saint Louis, Mo. | 11/1/08 | won by no-show forfeit |
| Gary Jackson | Saint Louis, Mo. | 12/6/08 | |
| Phil E. Blunt | Saint Louis, Mo. | 8/8/09 | |
| Dave Vaughn | Saint Louis, Mo. | 1/9/10 | 3-way w/ Gary Jackson |
| Donovan Ruddick | Saint Louis, Mo. | 11/6/10 | |
| Gary Jackson | Saint Louis, Mo. | 12/4/10 | |
| Brandon Espinosa | Saint Louis, Mo. | 1/21/12 | lumberjack match |
| Gary Jackson | Saint Louis, Mo. | 5/12/12 | |
| Big Dave Osborne | Saint Louis, Mo. | 2/16/13 |
Credit: Patrick Brandmeyer, Gary Weiss
