| Championshipname: | Zero1 USA World Junior Heavyweight Championship |
| Currentholder: | WARHORSE |
| Won: | December 17th, 2022 |
| Promotion: | National Wrestling Alliance (2003–2011) Pro Wrestling Zero1 / New Wrestling Alliance (2011–present) |
| Created: | September 3, 2003 |
| Mostreigns: | WARHORSE (3 reigns) |
| Firstchamp: | Austin Aries |
| Longestreign: | Oliver Cain (812 days) |
| Shortestreign: | Arya Daivari (<1 day) |
| Pastnames: |
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The Zero1 USA World Junior Heavyweight Championship is a title defended in Pro Wrestling Zero1's American affiliate Zero1 USA. The title was previously defended in the Midwest territory of the National Wrestling Alliance as the NWA Midwest X Division Championship[1] until 2011 when NWA Midwest disbanded following the stripping of Almighty Sheik (chairman of the territory) of the NWA Worlds Heavyweight Championship by NWA president Robert Trobich.[2] [3]
| Rank | Wrestler | No. of reigns | Combined days |
|---|---|---|---|
| 1 | Oliver Cain | 1 | 812 |
| 2 | 3 | 651 | |
| 3 | Matt Cage | 2 | 576 |
| 4 | Jake Lander | 2 | 560 |
| 5 | Victor Analog | 2 | 532 |
| 6 | Jason Dukes | 1 | 505 |
| 7 | 2 | 472 | |
| 8 | 1 | 362 | |
| 9 | Troy Walters | 2 | 322 |
| 10 | Jordan Perry | 1 | 266 |
| 11 | 1 | 245 | |
| 12 | Blake Steel | 1 | 238 |
| 13 | 1 | 229 | |
| 14 | Jimmy Karryt | 1 | 224 |
| 15 | 1 | 216 | |
| 16 | Mat Fitchett | 1 | 207 |
| 17 | Mason Quinn | 1 | 169-197 |
| 18 | Dysfunction | 1 | 119 |
| Gary Jay | 1 | 119 | |
| 19 | DaCobra | 1 | 112 |
| 1 | 112 | ||
| 20 | Jaysin Strife | 1 | 91 |
| 21 | Justin Kage | 1 | 82 |
| 22 | Bobby Valentino | 1 | 63 |
| 23 | Mickey McCoy | 1 | 49 |
| 24 | † Devonte Knox | 1 | 4 |
| 25 | 1 | <1External links |