| IWA World Championship | |
| Promotion: | Independent Wrestling Association Mid-South |
| Created: | April 3, 1997 |
| Retired: | June 14, 2022 |
| Mostreigns: | Aaron Williams and Ian Rotten (8 reigns) |
| Firstchamp: | Tower of Doom |
| Finalchamp: | Jake Crist |
| Longestreign: | Dingo (518 days) |
| Shortestreign: | John Wayne Murdoch and Aaron Williams (<1 day) |
| Oldest: | Tracy Smothers |
| Heaviest: | Tower Of Doom (418 lb) |
| Pastnames: | IWA Mid-South Heavyweight Championship (1997–2018) |
The IWA World Championship is the major title in the IWA Mid-South based in Louisville, Kentucky.[1] The title debuted at the "Crowning of a Champion" event on April 3, 1997, when Tower of Doom won a twelve-man tournament. There have been a total of 125 reigns among 59 champions and 19 vacancies. Tower of Doom was the inaugural champion, having defeated Ox Harley and Bull Pain in a tournament final three-way match on April 4, 1997, at Crowning of Champion. On June 14, 2022, Jake Crist vacated the title after failing to receive payment. As a result, the company ceased operations and the title was deactivated.
As of, .
| † | Indicates the current champion | |
|---|---|---|
| ¤ | The exact length of at least one title reign is uncertain. |
| Rank | Wrestler | No. of reigns | Combined days |
|---|---|---|---|
| 1 | 3 | 563 | |
| 2 | Dingo | 1 | 518 |
| 3 | 2 | 412 | |
| 4 | 2 | 339 | |
| 5 | 5 | 300 | |
| 6 | Aaron Williams | 8 | 293 |
| 7 | 3 | 284 | |
| 8 | 4 | 272 | |
| 9 | 8 | 235 | |
| 10 | Danny Daniels | 2 | 223 |
| 11 | 3 | 169 | |
| 12 | 5 | 149 | |
| 13 | Ace Perry | 1 | 148 |
| 14 | 1 | 147 | |
| 15 | Trent Baker | 2 | 133 |
| 16 | 1 | 127 | |
| 17 | 2 | 124 | |
| 18 | Reed Bentley | 3 | 123 |
| 19 | Harry Palmer | 3 | 116 |
| 20 | 2 | 114 | |
| 2 | 114 | ||
| 22 | 1 | 112 | |
| 23 | Toby Klein | 1 | 105 |
| 24 | 1 | 104 | |
| 25 | 1 | 103 | |
| 26 | Rollin' Hard | 3 | 97 |
| 27 | 2 | 92 | |
| 2 | 92 | ||
| Tyler Matrix | 3 | 92 | |
| 30 | JJ Garrett | 1 | 91 |
| 31 | 1 | 86 | |
| 32 | 1 | 84 | |
| 1 | 84 | ||
| 2 | 84 | ||
| 35 | 6 | 81 | |
| 36 | 1 | 73 | |
| 37 | 2 | ¤70–140 | |
| 38 | 1 | 69 | |
| 39 | Kevin Giza | 1 | 67 |
| 40 | 2 | 66 | |
| 41 | 2 | 56 | |
| 42 | Mitch Page | 3 | 47 |
| 1 | 47 | ||
| 44 | Darin Corbin | 1 | 42 |
| Todd Morton | 1 | 42 | |
| 46 | Cash Flo | 1 | 39 |
| 47 | Mark Wolf | 1 | 35 |
| 48 | Ox Harley | 1 | 34 |
| Suicide Kid | 4 | 34 | |
| 50 | Shane Mercer | 1 | 28 |
| 51 | 2 | 22 | |
| 52 | 1 | 21 | |
| 1 | 21 | ||
| Tower of Doom | 1 | 21 | |
| 55 | Billy Joe Eaton | 1 | 18 |
| 56 | Trik Davis | 1 | 14 |
| 57 | 1 | 4 | |
| 58 | 1 | 2 | |
| 59 | 1 | 1 | |
| 1 | 1 |