The 2020–21 R.S.C. Anderlecht season is the club's 113th season in existence and the 12th consecutive season in the top flight of Belgian football. In addition to the domestic league, Anderlecht will participate in this season's edition of the Belgian Cup. The season covers the period from 1 July 2020 to 30 June 2021.
^Genk qualifies for at least the play-off round of the Europa League through winning the 2021 Belgian Cup.
^On 14 April 2021 news was released that both Excel Mouscron and Oostende had not received a Belgian professional football license for the coming season, a requirement to play at the top two levels of Belgian football. For Oostende, a lack of financial transparency, together with generally poor quality and incompleteness of the submitted report, was given as the main reason by the committee for not awarding a license, while Excel Mouscron was refused a license as besides insufficient transparency, the committee also questioned several cash flows and whether the club was creditworthy in general, also due to the fact that the wages for the months of February and March had not yet been paid at that point. For Excel Mouscron, it was already the sixth year running the license was (initially) refused, however, the club has appealed the decision with the Belgian Court for Sports Arbitrage (BAS) successfully on each occasion and intended to do so again. Oostende was planning to launch an appeal as well, with the BAS to rule on the matter for both clubs before the 10th of May. Both clubs were allowed to add new documents to their case, but in case they however still did not receive a license after appeal, knew they would have been forced to relegate to the 2021–22 Belgian Division 2 and start the season with a 3-point penalty.[2] Both Exel Mouscron and Oostende were however eventually awarded a license after appeal, meaning Oostende remained at the top level, while Excel Mouscron only dropped one level.[3][4]
