Strasbourg Illkirch-Graffenstaden Basket, most commonly known as SIG Basket or SIG Strasbourg, is a French professional basketball club that is based in Strasbourg. The club, founded in 1929, competes domestically in the French Pro A League. The club's home games are played at Rhénus Sport. The players wear white and red uniforms.

The LNB Élite, currently known for sponsorship reasons as Betclic Élite, is the top-tier men's professional basketball league in France. The competition has existed since 1921. Since 1987, the Ligue Nationale de Basket (LNB) has governed the league.