No.
|
Champion
|
Championship change
|
Reign statistics
|
Notes
|
Ref.
|
Date
|
Event
|
Location
|
Reign
|
Days |
Defenses
|
|
National Wrestling Alliance (NWA) / (UPW) Ultimate Pro Wrestling / Pro Wrestling Zero-One (Zero-One)
|
1
|
Leonardo Spanky
|
June 29, 2002
|
Creation Tour
|
Sapporo, Japan
|
1
|
79 |
3
|
Spanky defeated Smelly to become the inaugural champion.
|
|
2
|
Low Ki
|
September 16, 2002
|
Genesis II
|
Tokyo, Japan
|
1
|
349 |
8
|
|
|
3
|
Wataru Sakata
|
August 31, 2003
|
Summer Festival Tour
|
Gifu, Japan
|
1
|
225 |
1
|
This match was also for Sakata's World-1 Junior Heavyweight Championship.
|
|
—
|
Vacated
|
April 12, 2004
|
—
|
—
|
—
|
— |
—
|
Sakata vacated the championship so he could focus on the defenses of his World-1 title.
|
|
4
|
Tatsuhito Takaiwa
|
May 16, 2004
|
Cashonor
|
Tokyo, Japan
|
1
|
216 |
5
|
Takaiwa defeated Tony Stradlin for the vacant championship.
|
|
|
AWA Superstars of Wrestling (AWA) / Pro Wrestling Zero1-Max (Zero1-Max) / Ultimate Pro Wrestling (UPW) / Pro Wrestling World-1 (World-1)
|
5
|
Super Crazy
|
December 18, 2004
|
AWA Heavyweight Title Contender Tournament Tour
|
Chiba, Japan
|
1
|
117 |
0
|
Crazy later unifies the World-1 Junior Heavyweight Championship into the International Junior Heavyweight Championship.
|
|
6
|
Ikuto Hidaka
|
April 14, 2005
|
Outburst Revolution Tour
|
Tokyo, Japan
|
1
|
318 |
4
|
|
|
7
|
Takuya Sugawara
|
February 26, 2006
|
Happening Tour
|
Tokyo, Japan
|
1
|
151 |
1
|
|
|
8
|
Tatsuhito Takaiwa
|
July 27, 2006
|
Fire Festival Tour
|
Osaka, Japan
|
2
|
<1 |
0
|
This match was also for Takaiwa's WWA World Junior Light Heavyweight Championship.
|
|
—
|
Vacated
|
July 27, 2006
|
—
|
—
|
—
|
— |
—
|
Takaiwa vacated the championship so it could be decided in the 2006 Tenkaichi Jr. tournament.
|
|
|
AWA Superstars of Wrestling (AWA) / Pro Wrestling Zero1-Max (Zero1-Max)
|
9
|
Minoru Fujita
|
August 26, 2006
|
Tenkaichi Junior
|
Kyoto, Japan
|
1
|
146 |
2
|
Fujita defeated Takuya Sugawara in the finals of the 2006 Tenkaichi Jr. tournament to become the new champion.
|
|
10
|
Ikuto Hidaka
|
January 19, 2007
|
Over the Max Tour
|
Tokyo, Japan
|
2
|
30 |
0
|
|
|
11
|
Tatsuhito Takaiwa
|
February 18, 2007
|
Make the Emotion Tour
|
Tokyo, Japan
|
3
|
77 |
0
|
|
|
—
|
Vacated
|
May 6, 2007
|
—
|
—
|
—
|
— |
—
|
The championship was vacated due to Takaiwa suffering a knee injury.
|
|
12
|
Dick Togo
|
June 20, 2007
|
Dynamo Tour
|
Tokyo, Japan
|
1
|
128 |
1
|
Togo won a 9-man battle royal to become the new champion.
|
|
13
|
Ikuto Hidaka
|
October 26, 2007
|
Innovation Tour
|
Tokyo, Japan
|
3
|
89 |
1
|
|
|
|
Pro Wrestling Zero1-Max (Zero1-Max)
|
14
|
Masaaki Mochizuki
|
January 23, 2008
|
Zero1-Max 3rd Anniversary
|
Tokyo, Japan
|
1
|
155 |
3
|
|
|
15
|
Ikuto Hidaka
|
June 26, 2008
|
Dauntless Tour
|
Tokyo, Japan
|
4
|
262 |
5
|
|
|
16
|
Sonjay Dutt
|
March 15, 2009
|
Wrestler's 1
|
Tokyo, Japan
|
1
|
259 |
0
|
|
|
—
|
Vacated
|
November 29, 2009
|
—
|
—
|
—
|
— |
—
|
The championship was vacated so it could be contested in the 2009 Tenkaichi Jr. tournament.
|
|
17
|
Ikuto Hidaka
|
November 29, 2009
|
Wrestler's 7 ~ Grant Me My Wish!
|
Tokyo, Japan
|
5
|
540 |
6
|
Hidaka defeated Prince Devitt in the finals of the 2009 Tenkaichi Jr. tournament to become the new champion.
|
|
|
National Wrestling Alliance (NWA) / Pro Wrestling Zero1 (Zero1)
|
18
|
Takuya Sugawara
|
May 23, 2011
|
House show
|
Tokyo, Japan
|
2
|
712 |
10
|
|
|
|
Pro Wrestling Zero1 (Zero1)
|
19
|
Jonathan Gresham
|
May 4, 2013
|
Big Bang
|
Tokyo, Japan
|
1
|
135 |
1
|
This match was also contested for Sugawara's NWA World Junior Heavyweight Championship. During his reign, Gresham additionally held the Zero1 USA World Junior Heavyweight Championship.
|
|
—
|
Vacated
|
September 16, 2013
|
—
|
—
|
—
|
— |
—
|
Gresham vacated both the International and NWA Junior Heavyweight titles so they could be contested in the 2013 Tenkaichi Jr. tournament.
|
|
20
|
Hub
|
September 16, 2013
|
11th Tenkaichi Jr.: Finals
|
Tokyo, Japan
|
1
|
174 |
3
|
Hub defeated Mineo Fujita in the finals of the 2013 Tenkaichi Jr. tournament to become the new champion. Hub additionally won the vacant NWA World Junior Heavyweight Championship.
|
|
21
|
Jason Lee
|
March 9, 2014
|
Zero1_Thirteen
|
Tokyo, Japan
|
1
|
194 |
3
|
This match was contested for the NWA World Junior Heavyweight Championship.
|
|
22
|
Mineo Fujita
|
September 19, 2014
|
Tenkaichi Junior
|
Tokyo, Japan
|
1
|
45 |
1
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
23
|
Takuya Sugawara
|
November 3, 2014
|
Hi no Kokudai Hanabi
|
Kumamoto, Japan
|
3
|
55 |
1
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
24
|
Jason Lee
|
December 28, 2014
|
Winter Fever 4
|
Hong Kong
|
2
|
63 |
1
|
This match was promoted by Zero1 Hong Kong and was also contested for the NWA World Junior Heavyweight Championship.
|
|
25
|
Minoru Tanaka
|
March 1, 2015
|
Zero1_Fourteen
|
Tokyo, Japan
|
1
|
222 |
3
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
26
|
Shinjiro Otani
|
October 11, 2015
|
Change the World
|
Tokyo, Japan
|
1
|
481 |
2
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
27
|
Kotaro Suzuki
|
February 3, 2017
|
Shinsei Zero1 Dream Series: Hakai no Jin
|
Tokyo, Japan
|
1
|
265 |
3
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
27
|
Sean Guinness
|
October 26, 2017
|
Dream Series Aki no Jin Korakuen Taikai
|
Tokyo, Japan
|
1
|
129 |
1
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
28
|
Isami Kodaka
|
March 4, 2018
|
Dream Series Sozo no Jin
|
Tokyo, Japan
|
1
|
|
2
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
—
|
Vacated
|
November 2018
|
—
|
—
|
—
|
— |
—
|
Kodaka was stripped of both the International and NWA Junior Heavyweight titles due to an injury.
|
|
29
|
Sugi
|
November 24, 2018
|
Dream Series ~ Nenotsuki No Jin ~ Tenka-Ichi Junior Tournament 2018
|
Tokyo, Japan
|
1
|
403 |
2
|
Sugi defeated Hayata in the finals of the 2018 Tenkaichi Jr. tournament to become the new champion. Sugi additionally won the vacant NWA World Junior Heavyweight Championship.
|
|
30
|
HUB
|
January 1, 2020
|
Happy New Year
|
Tokyo, Japan
|
2
|
247 |
1
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
31
|
Shoki Kitamura
|
September 4, 2020
|
Youth Playback! It All Started Here! Shinjiro Otani To Asakura!
|
Tokyo, Japan
|
1
|
58 |
0
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
32
|
El Lindaman
|
November 1, 2020
|
2020 Fire Festival Finals
|
Tokyo, Japan
|
1
|
310 |
1
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
—
|
Vacated
|
September 7, 2021
|
—
|
—
|
—
|
— |
—
|
Lindaman was stripped of both the International and NWA Junior Heavyweight titles after Gleat, Lindaman's home promotion, ends its working relationship with Zero1.
|
|
33
|
Fuminori Abe
|
September 9, 2021
|
Zero1 20th Anniversary Year - 18th Tenkaichi Junior Tournament 2021 Final
|
Tokyo, Japan
|
1
|
213 |
5
|
Abe defeated Shoki Kitamura in the finals of the 2021 Tenkaichi Jr. tournament to become the new champion. Abe additionally won the vacant NWA World Junior Heavyweight Championship.
|
|
34
|
Astroman
|
April 10, 2022
|
Zero1 Osu Premium Show Zero1 20th & 21st Anniversary Pro Wrestling
|
Tokyo, Japan
|
1
|
266 |
2
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
34
|
Leo Isaka
|
January 1, 2023
|
Zero1 Happy New Year 2023
|
Tokyo, Japan
|
1
|
195 |
4
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
35
|
Takumi Baba
|
July 15, 2023
|
Zero1 23rd Midsummer Festival
|
Tokyo, Japan
|
1
|
232 |
2
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
36
|
Seiki Yoshioka
|
March 3, 2024
|
Zero1 23rd Anniversary
|
Tokyo, Japan
|
1
|
304 |
0
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|
37
|
Takumi Baba
|
January 1, 2025
|
Tochi Pro Happy New Year & Shinjiro Otani Aid ~ Stand Up Again And Again
|
Tokyo, Japan
|
2
|
6+ |
0
|
This match was also contested for the NWA World Junior Heavyweight Championship.
|
|