1. Fußball-Club Kaiserslautern e. V., also known as 1. FCK, FCK or simply 1. FC Kaiserslautern, is a German association football club based in Kaiserslautern, Rhineland-Palatinate. On 2 June 1900, Germania 1896 and FG Kaiserslautern merged to create FC 1900. In 1909, the club went on to join FC Palatia and FC Bavaria to form FV 1900 Kaiserslautern. In 1929 they merged with SV Phönix to become FV Phönix-Kaiserslautern before finally taking on their current name three years later.
Kaiserslautern have won four German football championships, two DFB-Pokals, and one DFL-Supercup. Since 1920, Kaiserslautern's stadium is the Fritz-Walter-Stadion.