Georges St-Pierre (French pronunciation: [ʒɔʁʒ sɛ̃ pjɛʁ]; born May 19, 1981), also known by his initials GSP, is a Canadian former professional mixed martial artist.

[11] St-Pierre was a two-division champion in the Ultimate Fighting Championship (UFC), having won titles in the welterweight and middleweight divisions.

[31] Before turning pro as a mixed martial artist, St-Pierre worked as a bouncer at a Montreal night club in the South Shore called Fuzzy Brossard and as a garbageman for six months to pay for his school fees.

[33] As a youth, St-Pierre was inspired by Jean-Claude Van Damme, and described fighting him in the film Kickboxer: Vengeance as "a dream come true".

[39] St-Pierre began training with Rashad Evans, Nathan Marquardt, Keith Jardine, Donald Cerrone and other mixed martial arts fighters at Greg Jackson's Submission Fighting Gaidojutsu school in New Mexico.

Penn at the Tristar Gym, including Keith Jardine, Nathan Marquardt, Donald Cerrone, and Rashad Evans.

[41] After his loss to Matt Hughes, St-Pierre rebounded with a win over Dave Strasser at TKO 19 by a first–round kimura submission.

St-Pierre was seen vocally supporting fellow Canadian and training partner Patrick Côté during the season's airing.

In the second round, St-Pierre won the fight via technical knockout after a left kick to Hughes's head followed by a barrage of unanswered punches and elbows.

[51] St-Pierre has said that he lost the match partially due to a lack of focus because of problems in his personal life, including the death of a close cousin and his father's serious illness,[52] and later parted ways with his manager and most of his entourage.

[55] Before and after the fight, St-Pierre stated his intention to reclaim his lost title, miming the act of placing a championship belt around his waist while still in the octagon.

Hughes fought the extension, but was forced to submit verbally at 4:55 of the second round,[59] making St-Pierre the interim Welterweight Champion.

[61] Instead of starting with strikes, St-Pierre pressed the action early with a takedown and then mixed up his attack, which never allowed Serra the chance to mount a significant offence.

[63] Near the end of round two, the fight was stopped by referee Yves Lavigne with a visibly fatigued Serra unable to defend himself from St-Pierre's continuous knee blows or improve his position.

St-Pierre defeated Fitch by unanimous decision (50–43, 50–44, and 50–44),[64] scoring multiple strikes and taking the former Purdue wrestling captain down seemingly at will.

From that point on, St-Pierre took Penn down at will, repeatedly passed his guard, and persistently punished the Hawaiian with ground-and-pound attacks.

[72] St-Pierre successfully defended his welterweight title against Dan Hardy on March 27, 2010, at UFC 111, which took place in Newark, New Jersey.

"[86] Dana White confirmed via Twitter that St-Pierre's next opponent would be Nick Diaz at UFC 137 at the Mandalay Bay Event Center in Las Vegas, Nevada.

[96] Georges St-Pierre defended his title for the 8th time and defeated Nick Diaz at UFC 158 on March 16, 2013, by unanimous decision (50–45, 50–45, and 50–45).

[105] In a 2021 interview he said he needed the break because of the high levels of performance-enhancing substances in the UFC, as well as requiring time to work through personal issues.

[106] Via Twitter, St-Pierre announced on March 27, 2014, that he had torn his left ACL while training, further delaying a potential return to fighting.

[113] While on SportsCenter, Dana White confirmed that St-Pierre would make his return against UFC Middleweight Champion Michael Bisping sometime in 2017.

[115] During the post-fight conference at late July's UFC 214, Dana White stated the fight was back on.

[119] St-Pierre's return to the octagon set the record for the Canadian pay-per-view market, surpassing the Floyd Mayweather vs. Conor McGregor boxing match from August 2017.

In August, St-Pierre announced he was looking to return at the end of the year and was interested in dropping down to lightweight and fighting the winner of Khabib Nurmagomedov and Conor McGregor.

[123] On December 13, 2018, St-Pierre revealed on La Sueur podcast that he had recovered completely from ulcerative colitis, but had not yet decided whether or not he would return to fighting.

[126] On 9 June 2021, Saint-Isidore honoured St-Pierre with the unveiling of a life-sized 136 kg bronze statue of himself, complete with a biography entitled “Place GSP”.

[130] A month after UFC 52, St-Pierre decided to participate in the biggest grappling tournament in the world in the under 77 kg division.

[132] It was later announced that his opponent would be fellow UFC veteran Nick Diaz, but the match was postponed due to injury.

[134] St-Pierre has founded a charity, the GSP Foundation, that aims to reduce bullying and encourage youth participation in sports.