Dustin Glenn Poirier (born January 19, 1989) is an American professional mixed martial artist.

[8] He attended Northside High School for a short time, but he dropped out in the ninth grade because of repeatedly getting into trouble and street fights.

[9] Poirier turned professional in 2009, quickly compiled a record of 7–0, competing mostly in regional promotions across his native Louisiana and the Southern United States.

[15] After the UFC/WEC merger, newly crowned UFC Featherweight Champion José Aldo was set to make his first defense against No.

[26] Poirier defeated Holloway in the first round, with a triangle-armbar from the mount position, earning a Submission of the Night bonus.

[27] Poirier faced Chan Sung Jung on May 15, 2012, in the main event at UFC on Fuel TV: Korean Zombie vs.

[31] Poirier defeated Jonathan Brookins on December 15, 2012, at The Ultimate Fighter 16 Finale via D'arce Choke.

[32][33] Poirier quickly returned to action, taking his second fight within 63 days as he stepped in as a replacement for an injured Dennis Siver.

[34] Poirier faced Cub Swanson in the co-main event on February 16, 2013, at UFC on Fuel TV: Barão vs. McDonald.

[45][46] Poirier faced Carlos Diego Ferreira in a lightweight bout on April 4, 2015, at UFC Fight Night 63.

[53] However, Duffy pulled out of the fight on October 21, three days prior to the event, after sustaining a concussion during a sparring session.

[60] Poirier faced Michael Johnson in his second main-event bout on September 17, 2016, at UFC Fight Night 94.

With the Texas commission not operating under the new unified rules, referee Herb Dean declared the fight a no contest, as he did not believe Alvarez knew Poirier was a grounded opponent at the time.

[68] He won the fight via TKO after Pettis tapped out due to a broken rib when Poirier applied a body triangle in the third round.

[73] Poirier faced Eddie Alvarez in a rematch on July 28, 2018, in the main event at UFC on Fox 30.

[78] On August 3, 2018, it was announced that Poirier had agreed to fight Nate Diaz on November 3, 2018, in Madison Square Garden.

[79] However, on October 10, 2018, it was announced that Poirier pulled out due to a hip injury and as a result the bout was cancelled.

[97] Poirier won the fight in round one via technical knockout after the ringside doctor stopped the bout due to McGregor suffering a broken tibia, rendering him unable to continue.

[103] Poirier faced Justin Gaethje in a rematch of their 2018 bout, for the symbolic "baddest motherfucker" ('BMF') belt on July 29, 2023 at UFC 291.

[114][88] Poirier holds a black belt in Brazilian Jiu-jitsu under Tim Credeur, but mostly finishes his opponents through his proficiency in the striking arts since the early days of his career in the UFC.

His boxing skills are lauded, and he has showcased them in significant victories over elite-level strikers such as Justin Gaethje, Eddie Alvarez, Dan Hooker, Max Holloway, and Conor McGregor.

[116] Poirier auctioned his UFC 211 kit on eBay to raise money for Second Harvest Food Bank.

The highest bidder paid $5,100 for Poirier's shirt, gloves, cap, hand wraps and shorts.

The money raised went to the family of a deceased Lafayette police officer and the Acadiana Outreach Center, respectively.

[120][121] Poirier also auctioned his UFC on FOX fight kit and used the money raised to buy 500 backpacks for school children in his hometown of Lafayette.

[123] Likewise, Poirier announced that he would be auctioning off his UFC 242 fighting equipment to raise funds for the foundation.

According to Poirier, his foundation is working with Justin Wren's Fight for the Forgotten to help provide clean drinking water to the Echuya Batwa people in Uganda.

[129] During the COVID-19 pandemic, Poirier's foundation donated 1,000 meals to the employees of three major hospitals in his native Lafayette area.

[135] In July 2023, Poirier spent a day with a 17-year-old boy and cancer patient while training for UFC 291 as part of the Make-A-Wish Foundation.

[140] Poirier still spends most of his time in Lafayette with his wife and their daughter, but trains at American Top Team in South Florida, where he relocates before fights.