Club Sportif Sfaxien (Arabic: النادي الرياضي الصفاقسي‎) or CSS is a multi-sport club from Sfax in Tunisia. The club was founded in 1928 as Club Tunisien, playing in green and red stripes. The team was promoted to the Tunisian First Division in 1947. In 1950, the first supporters group was founded by Béchir Fendri, and in 1962 the club was renamed " Club Sportif Sfaxien " and team colours were changed to the current black and white stripes.