Royale Union Saint-Gilloise, also known as Union Saint-Gilloise, Union SG, USG, RUSG or simply Union, is a Belgian professional football club from Brussels based in Forest. Founded in 1897 in the neighbouring Saint-Gilles, the club has played its home matches at the historic Joseph Marien Stadium since the 1920s. One of the most successful clubs in Belgian football history, Union won eleven national titles between 1904 and 1935, dominating the domestic game before World War II. From 1933 to 1935, they went 60 league matches unbeaten—a national record that still stands.
- Country
- Belgium
- Headquarters
- Saint-Gilles
- Inception
- November 1, 1897
- Website
- https://rusg.brussels/
