INTERNATIONAL WRESTLING GRAND PRIX
HEAVYWEIGHT TITLE
(as of 2013/05/03)

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Antonio Inoki	87/06/12	Tokyo
Defeats Masa Saito in the final of '87 IWGP Tournament to be recognized as the first IWGP Heavyweight champion; vacant on 88/05/02 when Inoki breaks his foot.
Tatsumi Fujinami	88/05/08	Tokyo
Defeats Big Van Vader; title held up on 88/05/27 after a no-contest match against Riki Choshu in Sendai.
Tatsumi Fujinami [2]	88/06/24	Osaka
Wins rematch against Riki Choshu; vacates on 89/04/05 to raise the authority of the title, for which a one-night tournament at Tokyo Dome on 89/04/24 is held.
Big Van Vader	89/04/24	Tokyo
Defeats Shin'ya Hashimoto in one-night 8-man tournament final with Lou Thesz as the special referee.
Salman Hashimikov	89/05/25	Osaka
Riki Choshu	89/07/12	Osaka
Big Van Vader [2]	89/08/10	Tokyo
Riki Choshu [2]	90/08/19	Tokyo
Tatsumi Fujinami [3]	90/12/26	Hamamatsu
Big Van Vader [3]	91/01/17	Yokohama
Tatsumi Fujinami [4]	91/03/04	Hiroshima
Riki Choshu [3]	92/01/04	Tokyo
Great Muta (Keiji Mutoh)	92/08/16	Fukuoka
Shin'ya Hashimoto	93/09/20	Nagoya
Tatsumi Fujinami [5]	94/04/04	Hiroshima
Shin'ya Hashimoto [2]	94/05/01	Fukuoka
Keiji Mutoh [2]	95/05/03	Fukuoka
Nobuhiko Takada	96/01/04	Tokyo
Shin'ya Hashimoto [3]	96/04/29	Tokyo
Kensuke Sasaki	97/08/31	Yokohama
Tatsumi Fujinami [6]	98/04/04	Tokyo
Masahiro Chono	98/08/08	Osaka
Vacant on 98/09/21 after suffering a neck injury on 98/09/19 in Nagoya.
Scott Norton	98/09/23	Yokohama
Defeats Yuji Nagata.
Keiji Mutoh [3]	99/01/04	Tokyo
Gen'ichiro Tenryu	99/12/10	Osaka
Kensuke Sasaki [2]	00/01/04	Tokyo
Vacates the title on 00/10/09 after losing a non-title match to Toshiaki Kawada.
Kensuke Sasaki [3]	01/01/04	Tokyo
Defeats Toshiaki Kawada in 6-man one-night tournament final.
Scott Norton [2]	01/03/17	Nagoya
Kazuyuki Fujita	01/04/09	Tokyo
Vacates on 02/01/04 due to injury.
Tadao Yasuda	02/02/16	Tokyo
Defeats Yuji Nagata in 7-man tournament final.
Yuji Nagata	02/04/05	Tokyo
Yoshihiro Takayama	03/05/02	Tokyo
Reigning NWF Heavyweight champion, wins double title match.
Hiroyoshi Tenzan	03/11/03	Yokohama
NWF Heavyweight Title not on line.
Shinsuke Nakamura	03/12/09	Osaka
Unifies NWF Heavyweight Title on 04/01/05 after defeating Yoshihiro Takayama on 04/01/04 in Tokyo; vacates on 04/02/05 due to the injury from a match on 03/12/31.
Hiroyoshi Tenzan [2]	04/02/15	Tokyo
Defeats Gen'ichiro Tenryu in one-night 8-man tournament final.
Kensuke Sasaki [4]	04/03/12	Tokyo
Bob Sapp	04/03/28	Tokyo
Vacates on 04/06/01 after losing to Kazuyuki Fujita in an MMA match on 04/05/22 in Saitama.
Kazuyuki Fujita [2]	04/06/05	Osaka
Defeats Hiroshi Tanahashi.
Kensuke Sasaki [5]	04/10/09	Tokyo
Hiroyoshi Tenzan [3]	04/12/12	Nagoya
Satoshi Kojima	05/02/20	Tokyo
Has also won Triple Crown Heavyweight Title, defeating Toshiaki Kawada on 05/02/16 in Tokyo.
Hiroyoshi Tenzan [4]	05/05/14	Tokyo
Triple Crown Title not on line.
Kazuyuki Fujita [3]	05/07/18	Sapporo
Brock Lesnar	05/10/08	Tokyo
Wins a 3-way match against Fujita and Masahiro Chono by pinning Chono and is awarded the third version of the belt; stripped on 06/07/15 when Lesnar does not come to Japan due to a contractual problem but refuses to return the belt.
Hiroshi Tanahashi	06/07/17	Sapporo
Defeats Giant Bernard in 6-man tournament final and is awarded the second version of the belt.
Yuji Nagata [2]	07/04/13	Osaka
Kurt Angle defeats Brock Lesnar at an Inoki Genome Federation card on 07/06/29 in Tokyo to win the physical possession of the third version of the champion belt without the authorization by New Japan, which continues to recognize Nagata as the champion.
Hiroshi Tanahashi [2]	07/10/08	Tokyo
Shinsuke Nakamura [2]	08/01/04	Tokyo
Defeats Kurt Angle on 08/02/17 in Tokyo to unify the third version of the championship belt.
Keiji Mutoh [4]	08/04/27	Osaka
Hiroshi Tanahashi [3]	09/01/04	Tokyo
Manabu Nakanishi	09/05/06	Tokyo
Hiroshi Tanahashi [4]	09/06/20	Osaka
Vacates on 09/08/17 due to his eye socket fractured.
Shinsuke Nakamura [3]	09/09/27	Kobe
Defeats Togi Makabe.
Togi Makabe	10/05/03	Fukuoka
Satoshi Kojima [2]	10/10/11	Tokyo
Hiroshi Tanahashi [5]	11/01/04	Tokyo
Kazuchika Okada	12/02/12	Osaka
Hiroshi Tanahashi [6]	12/06/16	Osaka
Kazuchika Okada [2]	13/04/07	Tokyo