The Swiss Basketball League, also known as SB League or SBL, is the top-tier professional club basketball league in Switzerland. It is organized by Swiss Basketball. The winners of the SBL are crowned Swiss national basketball champions. Currently, twelve teams compete in the league. Historically, Fribourg Olympic is the league's most successful team, as it has won a record 16 championships. Until 2017, the league was known as the Championnat LNA.