Dustin Glenn Poirier (born January 19, 1989) is an American mixed martial artist, currently competing as a Lightweight in the Ultimate Fighting Championship. A professional competitor since 2009, he formerly competed for Bang FC and the WEC. Poirier is one of the subjects of the documentary Fightville by Petra Epperlein and Michael Tucker, which examines the mixed martial arts scene in southern Louisiana. As of August 1, 2018, he is #3 in the official UFC lightweight rankings.
Poirier is from Lafayette, Louisiana and is of French descent, specifically he is of Cajun heritage. Poirier wrestled at Northside High School (Lafayette, Louisiana). He relocated to South Florida with his wife Jolie for training purposes.
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. He defeated Daniel Watts on October 31, 2009 by knockout in the first round at Bang FC.