Reminder: This is in reverse chronological order, and please bare in mind that title matches in Japan are - more often than not - spread out across like AEW do with their titles.

IWGP World Heavyweight Championship [Reign #1]: Won from former L.I.J. stable mate Sanada on January 4th 2024 at Wrestle Kingdom 18 in Tokyo Dome - Lost The Title To: Rather surprisingly, to Jon Moxley on April 12th 2024 at NJPW's Windy City Riot 2024.

[Days Held: 99 Days - Successful Title Defenses: 2].

IWGP Tag Team Championships [Reign #2]: Won with fellow "Los Ingobernables de Japon" stable mate Sanada from "Dangerous Tekkers" Taichi and Zack Sabre Jr. on July 11th 2021 at NJPW's Summer Struggle in Sapporo Night 2 - Lost The Titles Back To: "Dangerous Tekkers" on July 25th 2021 at NJPW's Wrestle Grand Slam in Tokyo Dome 2021.

[Days Held: 14 Days - Successful Title Defences: 0].

IWGP Heavyweight Championship [Reign #3] and IWGP Intercontinental Championship [Reign #6]: Won back both titles from EVIL on August 29th 2020, 48 days after losing them to him, at NJPW's Summer Struggle in Jingu 2020 - Lost Both Titles To: Kota Ibushi on January 4th 2021 at NJPW's Wrestle Kingdom 15 Night 1 in Tokyo Dome.

[Days Held (For Both): 128 Days - Successful Title Defences (For Both): 1].

IWGP Heavyweight Championship [Reign #2]: Won from Kazuchika Okada on January 5th 2020 at NJPW's Wrestle Kingdom 14 Night 2 in Tokyo Dome in a match that also for Naito's IWGP Intercontinental Championship, which Naito had won the night prior.

Naito also held the IWGP Intercontinental Championship during this reign, and defended both titles at the same time.

Lost The Title To: Former "Los Ingobernables de Japon" stable mate turned "Bullet Club" member EVIL on July 12th 2020 at NJPW's Dominion in Osaka-jo Hall 2020 - 1 night after EVIL had won that years New Japan Cup Tournament and turned on Naito and L.I.J. - in a match that was also for Naito's IWGP Intercontinental Championship.

[Days Held: 189 Days - Successful Title Defences: 1].

IWGP Intercontinental Championship [Reign #5]: Won back from "Switchblade" Jay White on January 4th 2020 at NJPW's Wrestle Kingdom 14 Night 1 in Tokyo Dome, which in turn meant that Naito could challenge Kazuchika Okada for the IWGP Heavyweight Championship the next night at Wrestle Kingdom 14 Night 2.

Naito also held the IWGP Heavyweight Championship during this reign, and defended both titles at the same time.

Lost The Title To: Former "Los Ingobernables de Japon" stable mate turned "Bullet Club" member EVIL on July 12th 2020 at NJPW's Dominion in Osaka-jo Hall 2020 - 1 night after EVIL had won that years New Japan Cup Tournament and turned on Naito and L.I.J. - in a match that was also for Naito's IWGP Heavyweight Championship.

[Days Held: 190 Days - Successful Title Defences: 2].

IWGP Intercontinental Championship [Reign #4]: Won back from Kota Ibushi on June 9th 2019, 64 days after losing the title to him, at NJPW's Dominion in Osaka-jo Hall - Lost The Title To: "Switchblade" Jay White on September 22nd 2019 at NJPW's Destruction in Kobe 2019.

[Days Held: 105 Days - Successful Title Defences: 0*].

*Note: For those curious as to why Naito didn't defend the title in the amount of time he held it: It's because Naito - like other champions in New Japan - took part in the G1 Climax Tournament not too long after winning the title.

IWGP Intercontinental Championship [Reign #3]: Won back from Chris Jericho on January 4th 2019, 209 days after losing the title to him, at NJPW's Wrestle Kingdom 13 at Tokyo Dome in a No Disqualifications Match - Lost The Title To: Kota Ibushi on April 6th 2019 at the NJPW and ROH G1 Supercard joint event.

[Days Held: 92 Days - Successful Title Defences: 1].

IWGP Intercontinental Championship [Reign #2]: Won from Minoru Suzuki on April 29th 2018 at NJPW's Wrestling Hinokuni 2018 - Lost The Title To: Chris Jericho on June 9th 2018 at NJPW's Dominion 6.9 in Osaka-jo Hall.

[Days Held: 41 Days - Successful Title Defences: 0].

IWGP Intercontinental Championship [Reign #1]: Won from Michael Elgin on September 25th 2016 at NJPW's Destruction in Kobe 2016 (And yes, for those in the know, this is the reign where Naito treated the belt like s*** and pretty much destroyed the belt by the end of the reign).

Lost The Title To: Hiroshi Tanahashi on June 11th 2017 at NJPW's Dominion 6.11 in Osaka-jo Hall.

[Days Held: 259 Days - Successful Title Defences: 4].

IWGP Heavyweight Championship [Reign #1]: Won from Kazuchika Okada on April 10th 2016 at NJPW's Invasion Attack 2016, thanks to a little help from a debuting Sanada - Lost The Title Back To: Kazuchika Okada on June 19th 2016 at NJPW's Dominion 6.19 in Osaka-jo Hall.

[Days Held: 70 Days - Successful Title Defences: 1].

NEVER Openweight Championship [Reign #1]: Won from Masato Tanaka on September 29th 2013 at NJPW's Destruction 2013, in a match that also saw Naito's Tokyo Dome IWGP Heavyweight Championship challenge rights certificate being put on the line as well (basically if he lost, he would not have been able to challenge for the IWGP Heavyweight Championship at Wrestle Kingdom 8).

Lost The Title To: Tomohiro Ishii on February 11th 2014 at NJPW's The New Beginning at Osaka 2014.

[Days Held: 135 Days - Successful Title Defences: 2].

IWGP Tag Team Championships [Reign #1]: Won with Yujiro Takahashi as part of the team "No Limit" from "Team 3D" Brother Ray and Brother Devon on January 4th 2010 at NJPW's Wrestle Kingdom IV (4) in Tokyo Dome in a three-way hardcore match that also involved "Bad Intention's" Giant Bernard and Karl Anderson.

Lost The Titles To: "Seigigun" Wataru Inoue and Yuji Nagata on May 3rd 2010 at NJPW's Wrestling Dontaku 2010 in a three-way match that also involved "Bad Intention's" Giant Bernard and Karl Anderson.

[Days Held: 119 Days - Successful Title Defences: 1].

IWGP Junior Heavyweight Tag Team Championships [Reign #1]: Won with Yujiro Takahashi as part of the team "No Limit" from "Prince Prince" Minoru/Minoru Tanaka and Prince DeVitt/Finn Balor on October 13th 2008 at NJPW's Destruction '08.

Lost The Titles To: "The Motor City Machine Guns" Alex Shelley and Chris Sabin on January 4th 2009 at NJPW's Wrestle Kingdom III (3) in Tokyo Dome.

[Days Held: 83 Days - Successful Title Defences: 1].

[As of 14/04/2024].