Turn- und Sportgemeinschaft 1899 Hoffenheim e.V., or simply TSG 1899 Hoffenheim is a professional German association football club based in Hoffenheim, a village of Sinsheim municipality, Baden-Württemberg.
Originally founded in 1899 as a gymnastics club, Hoffenheim came into being in its modern form in 1945. A fifth division side in 2000, the club rapidly advanced through the German football league system with the financial backing of alumnus and software mogul Dietmar Hopp, and in 2008 Hoffenheim was promoted to the top tier Bundesliga. In the 2017–18 season, Hoffenheim finished third in the Bundesliga, qualifying for the UEFA Champions League group stage for the first time.
Since 2009, Hoffenheim has played its home games at the Rhein-Neckar-Arena, having previously played at the Dietmar-Hopp-Stadion from 1999.