The King of Iron Fist Tournament (ザ・キング・オブ・アイアンフィストトーナメント Za Kingu obu Airon Fisuto Tōnamento) is a fictional world-wide martial arts competition in the Tekken series that is held sporadically and is hosted by the Mishima Zaibatsu. It draws renowned fighters from all around the globe, and the winner will be granted both ownership of the Zaibatsu and a large sum of money. The tournaments act as the main setting of the Tekken games, with each main game taking place in a new tournament.
The sponsors of the tournament act as a host of sorts for the competition and are always the Sub-Boss or Final Boss of the game.
- First Tournament - Heihachi Mishima
- Second Tournament - Kazuya Mishima
- Third Tournament - Heihachi Mishima
- Fourth Tournament - Heihachi Mishima
- Fifth Tournament - Jinpachi Mishima
- Sixth Tournament - Jin Kazama
- Seventh Tournament - Heihachi Mishima
Every winner of every canonical tournament will be crowned the ownership of the tournament.
- First Tournament - Kazuya Mishima
- Second Tournament - Heihachi Mishima
- Third Tournament - Jin Kazama (Paul Phoenix defeated Ogre in the third tournament and, believing himself to be the winner, left. Unknown to Paul, Ogre morphed into his final form, True Ogre, and the tournament continued in his absence. In the end, Jin was proclaimed as the true victor of the third Tournament for being victorious over True Ogre. However, he was shot by his grandfather, Heihachi. Jin later transformed into a devil version of himself, attacked Heihachi, and flew off).
- Fourth Tournament - Heihachi Mishima (Although Jin Kazama's story battle ending is cannon, Heihachi is still the winner of the fourth tournment due to the fact that the battle at Hon-Maru takes place outside the tournment. The Tekken 5 character profile for Kazuya confirms that he lost to his father in the fourth tournment, making Heihachi the King of Iron Fist.)
- Fifth Tournament - Jin Kazama (Jin actually lost to Hwoarang but he transformed into Devil Jin and defeated him, allowing him to continue progressing through the tournament).
- Sixth Tournament - Jin Kazama (the tournament was actually canceled due to the war. Jin is also presumed to have died in the temple's collapse after defeating Azazel, but the actual truth is that he was found in a comatose state in the middle of the desert by Raven and his colleagues).
- Seventh Tournament - None so far (the tournament was canceled after the Zaibatsu reported Heihachi to be dead. Although Heihachi faked his death at first, he is finally killed for real at the hands of Kazuya in their last battle).
- Heihachi Mishima has sponsored the most tournaments, having sponsored the first, third, fourth and seventh tournaments.
- Every tournament has been sponsored by somebody within the Mishima bloodline and were also the antagonists from the games they sponsored the tournaments. Although only Jinpachi Mishima and Jin Kazama who are the only antagonists to have good explanations behind their regretful antagonistic roles.
- Jin has won the most tournaments out of all the characters in the series, having won the third, fifth, and sixth tournaments, although he technically defeated Kazuya and Heihachi in Tekken 4, it was taken place outside the tournament at the Mishima Dojo, and he actually was defeated by Hwoarang in Tekken 5, but the tournament officials let him continue after Jin fought Hwoarang again in his devil form.