The Chelsea F.C. is a soccer team.
Chelsea Football Club ( [ ˈtʃɛlsiː ] ) is an English professional football club based in Fulham , London , that competes in the Premier League , of which they are reigning champions . Chelsea are the only London club to win the UEFA Champions League , and one of five clubs to have won all three main UEFA club competitions , first English to do so . The Premier League is an English professional league for men 's association football clubs . The UEFA Champions League is an annual continental club football competition organised by the Union of European Football Associations ( UEFA ) and contested by top-division European clubs .