The 2020–21 Swedish Basketball League season was the 28th season of the Swedish Basketball League (SBL), the top tier basketball league on Sweden. Borås Basket is the defending champion.
On 16 June 2020, it was announced Fryshuset, winners of the Superettan, were promoted to the SBL.[1] On 25 June 2020, Wetterbygden Stars withdrew from the league due to the lack of financial support.[2]