2023–24 I liga

The 2023–24 I liga (also known as Fortuna I liga due to sponsorship reasons) was the 76th season of the second tier domestic division in the Polish football league system since its establishment in 1949 and the 16th season of the Polish I liga under its current title. The league was operated by the PZPN.

The regular season was being played as a round-robin tournament. A total of 18 teams participate, 12 of which competed in the league campaign during the previous season, while three to be relegated from the 2022–23 Ekstraklasa and the remaining three to be promoted from the 2022–23 II liga. The season started on 21 July 2023 and will conclude on 26 May 2024. Each team will play a total of 34 matches, half at home and half away.

Teams
A total of 18 teams participate in the 2023–24 I liga season.

Changes from last season
The following teams have changed division since the 2022–23 season.

Stadiums and locations

 * Note: Table lists in alphabetical order.


 * 1)  Due to Odra's home venue missing a heated pitch, they played their home games at GIEKSA Arena in Bełchatów from 15 November 2023 to 31 March 2024.
 * 2)  Due to the renovation of the Resovia Stadium in Rzeszów, Resovia play their home games at the Stadion Miejski Stal.
 * 3)  Wisła Płock played the first two home matches at limited capacity of 4,300 due to ongoing construction work. The stadium opened in its full capacity for a matchday 7 fixture against Polonia Warsaw.

Positions by round
Note: The place taken by the team that played fewer matches than the opponents was underlined.

Promotion play-offs
I liga play-offs final for the 2023–24 season will be played on 2 June 2024. The teams who finished in 3rd, 4th, 5th and 6th place are set to compete. The fixtures are determined by final league position – 3rd team of regular season vs 6th team of regular season and 4th team of regular season vs 5th team of regular season. The winner of final match will be promoted to the Ekstraklasa for next season. All matches will be played in a stadiums of team which occupied higher position in regular season.