16 teams will compete in the league – the thirteen teams from the previous season, two teams promoted from
Liga II directly and one team promoted via play-off.
Teams promoted from Liga II Csíkszereda Miercurea Ciuc became the first team to be promoted after fellow promotion contenders
Metaloglobus București earned a draw against
Reșița on 25 April 2025. The result means Csíkszereda Miercurea Ciuc will compete in the top flight for the first time in their history.
Argeș Pitești became the second team to be promoted on 6 May 2025 after defeating Reșița in matchweek 8 of the promotion round. This result saw Argeș Pitești return to the top flight after a two-season absence. Metaloglobus București became the third team to be promoted after defeating
Politehnica Iași 2–1 on aggregate in the promotion/relegation play-off round on 1 June 2025. This result means that Metaloglobus București will compete in the top division for the first time in their history.
Teams relegated to Liga II Gloria Buzău became the first team to be relegated after suffering a narrow defeat to
Farul Constanța on 4 May 2025. This result ended Gloria Buzău's time in Liga I for one season.
Sepsi OSK became the second team to be relegated after suffering a defeat to
Unirea Slobozia on 18 May 2025. This result ended Sepsi's time in Liga I for eight seasons. Politehnica Iași became the third team to be relegated after defeat to Metaloglobus București 2–1 on aggregate in the promotion/relegation play-off round on 1 June 2025. This result ended Iasi's time in Liga I for two seasons. == Teams ==