Florian Grégoire Claude Lejeune (French pronunciation: ; born 20 May 1991) is a French professional footballer who plays as a defender for Premier League club Newcastle United. He is equally adept at playing as either a defender or a midfielder, but plays mostly as a centre back.
Lejeune joined Villarreal ahead of the 2011–12 season after spending one season with Agde in the Championnat de France amateur and two seasons with Istres in Ligue 2.
Lejeune was born in Paris and began his football career in July 1998 at the Centre de Formation de Paris, a youth sporting club designed to cater only to football players under the age of 19. After four months at the academy, he departed for Racing Club des Ternes, a local sporting club based in the 8th arrondissement of Paris. Lejeune spent two years at the club and, in 2000, was signed by Racing Club de France. He spent the majority of his youth career at the club and, after a five-year stay, moved down south to join Béziers Méditerranée Cheminots, a sports club more known for its athletics department. With Béziers, Lejeune played in the Championnat de France 14 ans Fédéraux league.