Under the deal, the 2022-23 edition of the competition, which is scheduled to kick off on 15 July, will be known as the SuperSport Croatian First Football League.
The announcement comes after SuperSport in May signed a contract for marketing rights and betting rights for matches owned by the Croatian Football Association.
SuperSport already has a presence in the Croatian football market, having in September last year become title sponsor of the Croatian Football Cup, the country’s most prestigious domestic knockout competition.
“SuperSport, as a market leader, aims to continue to invest in the development of Croatian football, which shows its strength and progress from season to season,” SuperSport board member Radim Haluza said.
“I am firmly convinced that the new season of all domestic football competitions will be the best so far, especially SuperSport HNL.”
Croatian Football Association president Marijan Kustić added: “I am sure that we all share the tense anticipation of the start of the new season of SuperSport HNL and that, along with the commercial and marketing development, we will witness the continuation of the quality of our league football.”