# World Heavyweight Championship (Zero1)

The World Heavyweight Championship is a professional wrestling world heavyweight championship in the Japanese promotion Pro Wrestling Zero1. It is Zero1's top singles title. It was first introduced on December 15, 2007 when Zero1 ended their relationship with the AWA Superstars of Wrestling. The AWA Superstars of Wrestling Champion at the time, Masato Tanaka, was then recognized as the first Zero1 World Heavyweight Champion. To this day, Zero1 continues to use the AWA title belt, which reads "AWA World Heavyweight Wrestling Champion", to represent their world heavyweight championship.
There have been a total of 21 recognized champions who have had a combined 34 official reigns. The current champion is Go Shiozaki who is in his first reign.

## Title history

Key :
| No. | Overall reign number |
| Reign | Reign number for the specific champion |
| Days | Number of days held |
| Defenses | Number of successful defenses |
| + | Current reign is changing daily |
| No. | Champion | Championship change | Championship change | Championship change | Reign statistics | Reign statistics | Reign statistics | Notes | Ref. |
| No. | Champion | Date | Event | Location | Reign | Days | Defenses | Notes | Ref. |
| Pro Wrestling Zero1 ||||||||||
| 1 | Masato Tanaka | October 26, 2007 | Innovation | Tokyo, Japan | 1 | 353 | 6 | Tanaka defeated Takao Omori on October 26, 2007 to win the World Heavyweight Championship of AWA Superstars of Wrestling; Zero1 ended their business relationship with AWA Superstars of Wrestling on December 15, 2007 and the AWA championship was replaced with the Zero1-Max World Heavyweight Championship. In 2008, the promotion shortened its name to Pro Wrestling Zero1 and the championship's name changed to the "Zero1 World Heavyweight Championship". | |
| 2 | Yuji Nagata | October 13, 2008 | New Japan Pro-Wrestling's Destruction '08 | Tokyo, Japan | 1 | 137 | 3 | | |
| 3 | Shinjiro Otani | February 27, 2009 | Wrestler's Belief | Tokyo, Japan | 1 | 30 | 2 | | |
| 4 | Ryouji Sai | March 29, 2009 | Wrestler's Belief | Tokyo, Japan | 1 | 94 | 1 | | |
| 5 | Masato Tanaka | July 1, 2009 | Wrestler's 4 | Tokyo, Japan | 2 | 115 | 0 | | |
| 6 | Toshiaki Kawada | October 24, 2009 | Wrestler's 6: Never Gonna Stop! | Tokyo, Japan | 1 | 169 | 3 | | |
| 7 | Kohei Sato | April 11, 2010 | Celebration from the Yasukuni Shrine "Yamato Shinshu Chikara Matsuri" | Tokyo, Japan | 1 | 91 | 2 | | |
| 8 | Bambikiller | July 11, 2010 | ZERO ONE Knight STAND | Tokyo, Japan | 1 | 60 | 0 | | |
| 9 | Daisuke Sekimoto | September 9, 2010 | Euro Vintage Action | Tokyo, Japan | 1 | 178 | 4 | | |
| 10 | Ryouji Sai | March 6, 2011 | 10th Anniversary | Tokyo, Japan | 2 | 119 | 2 | The championship is renamed to the "AWA World Heavyweight Championship" during this reign. | |
| 11 | The Sheik | July 3, 2011 | Destructive King 7th Anniversary of Death Commemoration | Tokyo, Japan | 1 | 126 | 2 | This match was also for The Sheik's NWA World Heavyweight Championship. | |
| 12 | Kohei Sato | November 6, 2011 | Yarisugi Forever I | Tokyo, Japan | 2 | 87 | 2 | The championship's name reverts back to the "Zero1 World Heavyweight Championship" during this reign. | |
| 13 | Kamikaze | February 1, 2012 | ZERO1 Action 2012 | Tokyo, Japan | 1 | 30 | 0 | | |
| 14 | Akebono | March 2, 2012 | 11th Anniversary Show | Tokyo, Japan | 1 | 193 | 2 | | |
| — | Vacated | September 11, 2012 | — | — | — | — | — | | |
| 15 | James Raideen | August 4, 2013 | Fire Festival 2013: Final Day | Tokyo, Japan | 1 | 238 | 4 | Defeated Masato Tanaka in the finals of the 2013 Fire Festival to win the vacant title. | |
| 16 | Kohei Sato | March 30, 2014 | 11th Yamato Shinshu Chikara Matsuri | Tokyo, Japan | 3 | 98 | 1 | | |
| 17 | Masakatsu Funaki | July 6, 2014 | Wrestle-1's Shōgeki: Impact | Tokyo, Japan | 1 | 75 | 1 | | |
| 18 | Kohei Sato | September 19, 2014 | Tenkaichi Special | Tokyo, Japan | 4 | 408 | 4 | | |
| 19 | Hideki Suzuki | November 1, 2015 | Live event | Tokyo, Japan | 1 | 147 | 2 | | |
| 20 | Kohei Sato | March 27, 2016 | Live event | Tokyo, Japan | 5 | 364 | 3 | | |
| 21 | Masato Tanaka | March 26, 2017 | 14th Yamato Shinshu Chikara Matsuri | Tokyo, Japan | 3 | 281 | 4 | | |
| 22 | Yusaku Obata | January 1, 2018 | Kinga Shinnen | Tokyo, Japan | 1 | 153 | 4 | | |
| 23 | Masato Tanaka | June 3, 2018 | Shinsei Zero1 Sapporo First Landing ~ No Gravity Warrior Sugi Sapporo First Visit | Sapporo, Japan | 4 | 174 | 0 | | |
| 24 | Daisuke Sekimoto | November 24, 2018 | ZERO1 Dream Series ~ Nenotsuki No Jin ~ Tenka-Ichi Junior Tournament 2018 | Tokyo, Japan | 2 | 294 | 6 | | |
| 25 | Yuji Hino | September 14, 2019 | 16th ZERO1 Tenka-Ichi Championship Decision 2019 | Tokyo, Japan | 1 | 169 | 4 | | |
| 26 | Kohei Sato | March 1, 2020 | 19th Anniversary Show | Tokyo, Japan | 6 | 63 | 0 | | |
| 27 | Chris Vice | May 3, 2020 | Chojin Matsuri In Samurai! TV | Tokyo, Japan | 1 | 116 | 2 | | |
| 28 | Hayato Tamura | August 27, 2020 | New ZERO1 | Tokyo, Japan | 1 | 127 | 2 | | |
| 29 | Masato Tanaka | January 1, 2021 | ZERO1 Happy New Year 2021 | Tokyo, Japan | 5 | 226 | 1 | | |
| Pro Wrestling Noah ||||||||||
| 30 | Takashi Sugiura | August 15, 2021 | Pro Wrestling Noah's Kawasaki GO! | Kawasaki, Japan | 1 | 293 | 3 | This was a Winner Takes All match, in which Sugiura also defended the GHC National Championship. | |
| 31 | Masato Tanaka | June 4, 2022 | Osu Premium One Team ZERO1 Shinjiro Otani Aid! Get Up As Many Times As You Want | Tokyo, Japan | 6 | 356 | 3 | | |
| 32 | Chris Vice | May 26, 2023 | ZERO1 Fibromyalgia Charity Show | Tokyo, Japan | 2 | 310 | 2 | | |
| 33 | Akitoshi Saito | March 31, 2024 | ZERO1 Noto Peninsula Earthquake Charity Pro Wrestling | Tokyo, Japan | 1 | 104 | 3 | | |
| 34 | Go Shiozaki | July 13, 2024 | Noah Destination 2024 | Tokyo, Japan | 1 | 222+ | 3 | | |

## Combined reigns

As of February 20, 2025.
| † | Indicates the current champion |
| Rank | Wrestler | No. of reigns | Combined defenses | Combined days |
| 1 | Masato Tanaka | 6 | 14 | 1,505 |
| 2 | Kohei Sato | 6 | 12 | 1,111 |
| 3 | Daisuke Sekimoto | 2 | 10 | 472 |
| 4 | Chris Vice | 2 | 4 | 426 |
| 5 | Takashi Sugiura | 1 | 3 | 293 |
| 6 | James Raideen | 1 | 4 | 238 |
| 7 | Go Shiozaki † | 1 | 3 | 222+ |
| 8 | Ryouji Sai | 2 | 3 | 213 |
| 9 | Akebono | 1 | 2 | 193 |
| 10 | Toshiaki Kawada | 1 | 3 | 169 |
| 10 | Yuji Hino | 1 | 4 | 169 |
| 12 | Yusaku Obata | 1 | 4 | 153 |
| 13 | Hideki Suzuki | 1 | 2 | 147 |
| 14 | Yuji Nagata | 1 | 3 | 137 |
| 15 | Hayato Tamura | 1 | 2 | 127 |
| 16 | The Sheik | 1 | 2 | 126 |
| 17 | Akitoshi Saito | 1 | 3 | 104 |
| 18 | Masakatsu Funaki | 1 | 1 | 75 |
| 19 | Bambikiller | 1 | 0 | 60 |
| 20 | Kamikaze | 1 | 0 | 30 |
| 20 | Shinjiro Otani | 1 | 2 | 30 |

## Belt design

The standard Championship belt has three plates on a black leather strap.