RK Borac Banja Luka were the men's defending champions, and HŽRK Grude were the women's defending champions.
[2] Sixteen teams joined the regular season, played as double round robin tournament.
The following 16 clubs compete in the Handball Premier League during the 2020-21 season.
[3] Eleven teams joined the regular season, played as double round robin tournament.
The following 11 clubs compete in the Handball Premier League during the 2020-21 season.