On 9 April 2020 the Hungarian Handball Federation decided to cancel the season with immediate effect due to the COVID-19 pandemic.
[1] In the meaning of the decision there will be no national champion named, the results of the season will be deleted and the final league table of the 2018/19 season will determine which clubs will participate in the international competitions in 2020/21.
After the 2018–19 season, Budaörs Handball and Eszterházy KESC were relegated to the 2019–20 Nemzeti Bajnokság I/B.
They were replaced by two clubs from the 2018–19 Nemzeti Bajnokság I/B; Szent István SE and Szombathelyi KKA.
Following is the list of clubs competing in 2019–20 Nemzeti Bajnokság I, with their president, head coach, kit manufacturer and shirt sponsor.