ŁKS Łódź is a Polish sports club based in Łódź. They are best known for their football club but are represented in many sports such as basketball, volleyball, boxing, and in the past ice hockey, athletics, tennis, table tennis, swimming, cycling, fencing, chess, etc. The club is based at Stadion Miejski im. Władysława Króla, at Aleja Unii Lubelskiej 2 in the West of Łódź.

Poland Ekstraklasa, meaning "Extra Class" in Polish, named PKO Bank Polski Ekstraklasa since the 2019–20 season due to its sponsorship by PKO Bank Polski, is the top Polish professional league for men's association football teams.