Union Sportive Sarre-Union is a French association football team founded in 1924, based in the town of Sarre-Union.

Their home stadium is the Stade Omnisports in the town.

As of the 2017–18 season they play in Championnat National 3, the fifth level in the French football league system.

As of the 2016–17 season, they play in the Championnat de France Amateur 2 Group D. Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Players may hold more than one non-FIFA nationality.