is a Japanese sports executive, podcaster and retired professional wrestler. He is signed to New Japan Pro-Wrestling (NJPW), where he serves as the president and representative director, whilst also wrestling for them from 1999 until 2026.

Widely regarded as one of the greatest professional wrestlers of all time, his accolades in NJPW include a record setting eight reigns as IWGP Heavyweight Champion, a record three reigns as IWGP United States Heavyweight Champion, two reigns as IWGP Intercontinental Champion, one reign as NJPW World Television Champion, three reigns as IWGP Tag Team Champion, one reign as NEVER Openweight Champion and six reigns as NEVER Openweight 6-Man Tag Team Champion. All totaled, Tanahashi has won 26 championships in NJPW. He has also won the G1 Climax, NJPW's premier tournament, on three occasions (2007, 2015 and 2018), won the New Japan Cup twice (2005 and 2008), and is recognized as the fourth wrestler to accomplish NJPW's Triple Crown and the second to accomplish its Grand Slam, making him one of the most decorated wrestlers in NJPW.

Through NJPW's working agreements with Consejo Mundial de Lucha Libre (CMLL), Pro Wrestling NOAH, Ring of Honor (ROH), All Elite Wrestling (AEW) and Revolution Pro Wrestling, Tanahashi has also held the CMLL World Tag Team Championship, the CMLL World Trios Championship, the CMLL Universal Championship, GHC Tag Team Championship, and the RevPro British Heavyweight Championship. Between NJPW, CMLL, Noah, ROH and RevPro, he has 27 championship reigns.

When Tanahashi was inducted into the Wrestling Observer Hall of Fame in 2013, Dave Meltzer stated that "you could make a strong case for him as the best in-ring performer in the business today", adding that he was "the leading star in New Japan Pro-Wrestling's comeback from being in terrible shape a few years back to being the No. 2 pro wrestling company in the world". Readers of the Wrestling Observer Newsletter named Tanahashi as the best wrestler of the 2010s in March 2020.

Early life Before entering professional wrestling, Tanahashi was a baseball player in high school. He studied law at Ritsumeikan University in Kyoto, where he began practicing freestyle wrestling. During this time, he was noticed by New Japan Pro-Wrestling (NJPW) talent scouts and was invited to try out for the NJPW Dojo. His February 1998 tryout was successful and he was accepted as a trainee. He enrolled in the NJPW dojo after graduating from Ritsumeikan University the following year. Tanahashi has cited Shawn Michaels as his favorite wrestler. He also admired Tatsumi Fujinami, and considered using the ring name "Dragon Hiroshi" in honor of him.

Professional wrestling career New Japan Pro-Wrestling (1999–present) Early years (1999–2003) After graduating from the NJPW Dojo, Tanahashi made his debut on October 10, 1999, in a match losing to Shinya Makabe. Alongside fellow rookies Katsuyori Shibata and Shinsuke Nakamura, Tanahashi became known as one of the "new Three Musketeers". He became viewed as a big prospect and was given big wins over lucha libre legend Negro Casas in July 2000 and American Scott Hall in September 2001. His star continued to rise and in the 2002 G1 Climax (one of NJPW's most important annual tournaments) Tanahashi pinned Kensuke Sasaki in under two minutes.

After this, Tanahashi was paired with Kenzo Suzuki in a tag team named the Kings of the Hills. This pairing was popular, but came to an end after a real life incident in November 2002 in which Tanahashi was stabbed in the back by Hitomi Hara, a TV Asahi news reporter. Tanahashi and Hara had dated one another, but in a meeting at her Tokyo apartment he tried to break off the relationship as he had started dating another woman, which led to Hara stabbing him twice. Hara later confessed she tried to kill Tanahashi and planned to commit suicide afterwards. Hara was charged with attempted murder and sentenced to four years on probation. On February 16, 2003, Tanahashi returned as a singles wrestler to a sold-out crowd in Tokyo in a match against Manabu Nakanishi.

Rise to Stardom (2003–2010) His career began to rapidly climb from this point. In the later half of 2003 Tanahashi captured the IWGP U-30 Openweight Championship and the IWGP Tag Team Championship, the latter on two separate occasions. In August 2004 he made it to the finals of the G1 Climax and on January 4, 2005, he headlined the Toukon Festival: Wrestling World 2005 show in Tokyo Dome in a match, where he dropped the U-30 Openweight Championship to Shinsuke Nakamura. In 2005, Tanahashi also made an appearance in the 15th Sasuke competition on July 20. He was eliminated in the first round. On June 18, Tanahashi defeated Toru Yano in a tournament final to regain the U-30 Openweight Championship. He would go on to defeat Masahiro Chono by Sling Blade in the first round of the New Japan Cup (determining a No. 1 contender against IWGP Heavyweight Champion Brock Lesnar) on April 16, 2006, in Korakuen Hall and Hiroyoshi Tenzan by Dragon suplex hold in the second round on April 25 in Omuta Citizen Gymnasium before falling to Yuji Nagata's wrist-clutch Exploder in the semifinal on April 29 in the Tottori Industrial Gymnasium. He also defeated Tiger Mask on May 13 in the first ever main event of the new Wrestle Land brand (a promotional experiment by New Japan with "sports entertainment"), debuting a modified side buster finish. On June 7, Tanahashi vacated the U-30 Openweight Championship in order to fully focus on his upcoming match against Brock Lesnar for the IWGP Heavyweight Championship.

When Lesnar failed to show up for the match, he was stripped of the title and Tanahashi was placed in a tournament for the vacant title. On July 17, Tanahashi won his first IWGP Heavyweight Championship when he defeated Giant Bernard in the finals of the tournament for the vacant title. He showed the title belt on his second appearance on Sasuke during the 17th competition, where he was again eliminated in the first round. After holding the title belt for almost 9 months (270 days) and defending the title against the likes of Taiyō Kea, Shinsuke Nakamura and others, Tanahashi lost the title to Yuji Nagata, who had won the 2007 New Japan Cup to become the No. 1 contender. Tanahashi managed to come back from this by winning the 2007 G1 Climax, where he defeated Nagata in the finals and successfully challenged his rival to a rematch on October 8, 2007, where he pinned Nagata to regain the title. On January 4, 2008, at New Japan's annual Tokyo Dome show titled Wrestle Kingdom II in Tokyo Dome, Tanahashi was defeated by Shinsuke Nakamura for the IWGP Heavyweight title in the night's main event. In February's New Japan Ism tour, Tanahashi successfully defeated A.J. Styles in a highly anticipated rematch of their 2006 bout in Total Nonstop Action Wrestling (TNA). Following this, Tanahashi was entered into the coveted New Japan Cup tournament in which the winner would face off against the then-IWGP Heavyweight Champion Shinsuke Nakamura as the number one contender. With a win over Giant Bernard, Tanahashi became the first two-time winner of the New Japan Cup.

After New Japan Cup, competed in the All Japan Pro Wrestling's Champion Carnival. He came in as a villain and was given the "Block from Hell" as he had to face nearly all of All Japan's top talent including Taiyō Kea, Satoshi Kojima, Toshiaki Kawada and his mentor Keiji Muto. He went undefeated and advanced to the finals where he was finally subdued by Suwama.

On January 4 at Wrestle Kingdom III in Tokyo Dome, Tanahashi defeated Muto to become the 50th IWGP Heavyweight Champion, beginning his third reign. Following his victory, when asked who he would like his next challenger to be, Tanahashi called out generation rival Shinsuke Nakamura, who accepted. At New Japan's ISM tour on February 15, Tanahashi defeated Nakamura with the High Fly Flow in his first title defense. Tanahashi defeated Kurt Angle on April 5 at New Japan's "Resolution 09" with two High Fly Flows. His next opponent was Hirooki Goto, whom he defeated on May 3 at Wrestling Dontaku 2009 with a High Fly Flow. Just days later, Tanahashi was defeated by Manabu Nakanishi on May 6 at "Dissidence 2009". He regained the Title from Nakanishi on June 20 at Dominion 6.20 for his fourth reign. He successfully defended the title against Pro Wrestling Noah's Takashi Sugiura on July 20, the first ever NJPW vs. Noah match for the IWGP Heavyweight title. During a post-match interview, Tanahashi was interrupted by Tajiri, who then sprayed Tanahashi with Green Mist. Tanahashi would vacate the IWGP Heavyweight title on August 17, due to an eye fracture injury he suffered in a match with Shinsuke Nakamura, in the semi-finals of the 2009 G1 Climax Tournament. On November 8 at Destruction '09 Tanahashi returned to challenge for the belt he was forced to vacate, but came up short against the reigning champion Nakamura. On December 5 Tanahashi would avenge the loss he suffered during the G1 Climax Tournament and end his feud with Tajiri by pinning him in a singles match with the High Fly Flow. Afterwards, Tanahashi made a challenge to Pro Wrestling Noah and on January 4, 2010, at Wrestle Kingdom IV in Tokyo Dome he defeated Noah's Go Shiozaki in a match that was billed as "Ace vs. Ace". Since then, Tanahashi would begin a feud with Toru Yano, starting with Yano upsetting Tanahashi in a tag team match on January 30, where he teamed with Manabu Nakanishi and Yano with Shinsuke Nakamura. On February 14, Tanahashi avenged his loss in a singles match with Yano, but was jumped after the match by Masato Tanaka, after which Yano proceeded to cut off some of his hair. After Yano defeated Tanahashi in a singles match at Wrestling Dontaku 2010, New Japan booked the two men in a Hair vs. Hair match for June 19. On June 19 at Dominion 6.19, Tanahashi defeated Yano and was afterwards assisted by former rival Tajiri and Kushida in taking care of Yano's ally Takashi Iizuka and shave his opponent's hair. In August, Tanahashi entered the 2010 G1 Climax tournament and made it all the way to the finals, after four wins and a draw in the round robin stage of the tournament. However, in the finals Tanahashi was defeated by freelancer Satoshi Kojima. In October and November 2010, Tanahashi teamed with Tajiri in New Japan's 2010 G1 Tag League. After a strong start in the tournament, Tanahashi and Tajiri were defeated by the IWGP Tag Team Champions Bad Intentions (Giant Bernard and Karl Anderson) on November 6, the last day of group stages, and slipped to third place in their block, narrowly missing the semifinals of the tournament.

Record-breaking IWGP Heavyweight Champion (2010–2014)

After scoring back-to-back pinfall victories over top contender Hirooki Goto and Tetsuya Naito on December 11 and 12, Tanahashi was granted a shot at the IWGP Heavyweight Champion Satoshi Kojima at Wrestle Kingdom V in Tokyo Dome. At the event on January 4, 2011, Tanahashi defeated Kojima to win the IWGP Heavyweight Championship for the fifth time. On February 20 at The New Beginning, Tanahashi made his first successful defense of the title, defeating Kojima in a rematch. Tanahashi went on to successfully defend the title against New Japan Cup winner Yuji Nagata on April 3 and Shinsuke Nakamura on May 3. In May 2011, Tanahashi took part in the Invasion Tour 2011, New Japan's first ever tour of the United States, during which he successfully defended the IWGP Heavyweight Championship against Charlie Haas on May 14 in New York City.