FC Rastatt 04 is a German association football club from the city of Rastatt, Baden-Württemberg. It was established as Fußball-Klub Rastatt on 9 October 1904 at the Gasthaus zur Linde. A 1919 union with Fußball-Club Phoenix created Rastatt Fußballverein 04, which merged with Frankonia 1912 Rastatt on 23 August 1939 to form FC Rastatt 04. The club enjoyed its greatest success in the 1930s, 1940s, and early 1950s when it took part in top-flight regional competition in southwestern Germany.