Sepsi OSK

Asociația Club Sportiv Sepsi OSK Sepsiszentgyörgy, commonly known as Sepsiszentgyörgy, Sepsi OSK, or simply Sepsi, is a Romanian professional football club based in Sfântu Gheorghe, Covasna County.

Sepsi was founded in 2011 and enrolled in the fifth division, which it immediately went on to win. Six years later, it became the first team from Covasna—a county with a majority of Székely ethnics—to achieve promotion to the highest tier of Romanian football. In its first season in the Liga I, Sepsi finished ninth out of 14, being spared from relegation.

"The Red and Whites" hold their home games at the 5,200-capacity Municipal Stadium.