The tournament began on 2 September 2020 and ended on 25 May 2021 with the final.
[1] The winners of the competition, Olimpija Ljubljana, earned a place in the second qualifying round of the 2021–22 UEFA Europa Conference League.
[2] Mura were the defending champions after winning the previous season's final.
Twelve first round matches were played from 2 to 23 September 2020.
[1] The round of 16 ties were played between 20 October 2020 and 18 March 2021.