World Heavyweight Championship (Zero1)
| World Heavyweight Championship | |||||||||||||||
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Hayato Tamura with the current belt design in September 2020 | |||||||||||||||
| Details | |||||||||||||||
| Promotion | Pro Wrestling Zero1 (2007–present) Pro Wrestling Noah (2021–present) | ||||||||||||||
| Date established | October 26, 2007 | ||||||||||||||
| Current champion | Masato Tanaka | ||||||||||||||
| Date won | November 10, 2025 | ||||||||||||||
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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 35 official reigns. Masato Tanaka is the current champion in his seventh reign. He defeated Atsushi Kotoge to win the vecated title on First Advance To The Holy Land on November 10, 2025. Previous champion Go Shiozaki vacated the title due to him leaving Pro Wrestling Noah.