| Grégory Poirier | |
| Birth Date: | 9 July 1982 |
| Birth Place: | La Rochelle, France |
| Height: | 1.88 m |
| Position: | Midfielder |
| Currentclub: | Red Star (head coach) |
| Years1: | 2002–2003 |
| Clubs1: | La Rochelle |
| Years2: | 2003–2004 |
| Clubs2: | Entente Perrier Vergèze |
| Years3: | 2004–2009 |
| Clubs3: | Arles |
| Years4: | 2009–2010 |
| Clubs4: | Nîmes |
| Caps4: | 5 |
| Goals4: | 0 |
| Years5: | 2010–2013 |
| Clubs5: | Amiens |
| Caps5: | 34 |
| Goals5: | 0 |
| Manageryears1: | 2016–2017 |
| Managerclubs1: | Arles-Avignon |
| Manageryears2: | 2017–2019 |
| Managerclubs2: | Marseille Endoume |
| Manageryears3: | 2019–2020 |
| Managerclubs3: | Saint-Malo |
| Manageryears4: | 2020 |
| Managerclubs4: | Sedan |
| Manageryears5: | 2021–2024 |
| Managerclubs5: | Martigues |
| Manageryears6: | 2024– |
| Managerclubs6: | Red Star |
Grégory Poirier (born 9 July 1982) is a French professional football manager and former player who is the head coach of Ligue 2 club Red Star. As a player, he was a midfielder. As a manager, he won two consecutive promotions with Marseille Endoume from Régional 1 to Championnat National 2, and two more with Martigues from Championnat National 2 to Ligue 2.
Poirier was a youth coach at Arles-Avignon before being named first-team manager in 2016, aged 34.[1] In March 2017, he took over at Marseille Endoume, and led them to consecutive promotions from the sixth-tier Régional 1 to the fourth-tier Championnat National 2.[2]
In June 2019, Poirier signed with Saint-Malo in the same league.[3] He resigned the following May with one year left on his contract; the season had been abandoned due to the COVID-19 pandemic, with his team in 9th.[4] He immediately moved to Sedan, where he was tasked with winning promotion to the Championnat National.[5] Having won once and drawn five times in seven games, he was sacked in December 2020, more than one month into another COVID-related hiatus.[6]
In May 2021, Poirier returned to Provence to manage Martigues in the fourth tier. He won promotion in his first season, ending a decade-long exile from the Championnat National.[7] Martigues finished the 2023–24 Championnat National as runners-up to Red Star, thus returning to Ligue 2 for the first time in 22 years.[8]
On 4 June 2024, Poirier succeeded Habib Beye as manager of Red Star.[9]