Royale Union Saint-Gilloise (Union SG, USG or Union), is a Belgian professional football club originally located in the municipality of Saint-Gilles, in Brussels, although since the 1920s it has been based at the Joseph Marien Stadium in the neighbouring municipality of Forest.
- Full name: Royale Union Saint-Gilloise
- Nicknames: Les Unionistes; Union 60
- Founded: 1 November 1897
- Club website: rusg.brussels
Union SG logo svg
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