Description Available in: Union Sportive Pays de Saint-Omer is a French association football team founded in 1894. They are based in Saint-Omer, France. As of the 2020–21 season, they play in Championnat National 3 (the fifth tier in the French football league system) having won promotion in 2020. They play at the Stade Gaston Bonnet in Saint-Omer. The team colours are white shirts and black shorts.
The team was known as Union Sportive de Saint-Omer until 2020, when a merger with FC Tatinghem took place, and the current name was taken.
Their best-ever performance in the French Cup saw them reach the last 16 in season 1991–92 before losing 2–4 to AS Monaco at home. In season 2008–09, they knocked SC Amiens (a Ligue 2 side) out of the same competition in the seventh round.
At the end of season 2012–13, a 1–2 home defeat at the hands of Marck saw USSO relegated to the DHR, the seventh tier of French football.