Dustin Poirier's Real Name: Dustin Poirier
Dustin Poirier → Dustin Poirier
Quick answer: Dustin Poirier's real name is Dustin Poirier. He is an American mixed martial artist, born January 19, 1989, later a UFC lightweight known as The Diamond.
Real name and early life
He is known professionally as Dustin Poirier and, on the UFC's athlete page, as "The Diamond." Independent publishers used here record that public name rather than a longer legal form, so the public name is used in the title. ESPN dates the birth to January 19, 1989, and lists the nickname The Diamond. The UFC athlete page does not give a full calendar birth date; it lists his place of birth as Lafayette, Louisiana, United States, and says he trains at American Top Team in Coconut Creek, Florida, with a fighting style of jiu-jitsu. ESPN independently lists American Top Team and the same nickname, and gives his weight class as lightweight, matching the UFC page.
Career highlights
The UFC athlete page lists his professional record as 30-10-0, with 16 wins by knockout, 7 by submission, and 13 first-round finishes, and dates his Octagon debut to January 2, 2011. ESPN independently lists the same 30-10-0 record and 16 knockout wins and 7 submissions.
The official UFC 302 main-card results, dated June 2, 2024, say that on the card at Prudential Center in Newark, Islam Makhachev defeated Poirier by submission (D'arce choke) at 2:42 of Round 5, in a lightweight championship main event. The official UFC 318 main-card results, dated July 20, 2025, say the event took place on July 19, 2025, at Smoothie King Center in New Orleans, and that Max Holloway defeated Poirier by unanimous decision. That results report also says Holloway successfully defended his BMF championship and describes the bout as closing out Poirier's career, calling him the retiring Dustin Poirier. The athlete page, at the time it was consulted, still listed his status as Active. This page records both the official results wording and that athlete-page status line.
Name notes for searchers
People looking up Dustin Poirier or The Diamond are looking for the same American mixed martial artist. Independent sources support the public name used in the title.
FAQ
What is Dustin Poirier's real name?
Dustin Poirier, according to the UFC athlete page and ESPN, which also list the nickname The Diamond.
When and where was he born?
ESPN dates the birth to January 19, 1989. The UFC athlete page lists the place of birth as Lafayette, Louisiana.
What is his professional MMA record?
30-10-0, according to the UFC athlete page and ESPN.
What were the official results of his 2024 and 2025 title-card fights?
UFC's official results say Makhachev defeated him by submission at UFC 302 on the June 2024 Newark card, and that Holloway defeated him by unanimous decision at UFC 318 on July 19, 2025, in New Orleans.