Dustin Glenn Poirier is an American former professional mixed martial artist who competed from 2009 to 2025. He formerly competed in the Featherweight and Lightweight divisions of the Ultimate Fighting Championship (UFC), where he was an interim UFC Lightweight Champion. Poirier also challenged three times for the undisputed UFC Lightweight Championship and twice for the BMF title. He is considered one of the greatest Lightweights of all time.
