2018–19 I liga

The 2018–19 I liga (currently named Fortuna I liga due to sponsorship reasons) was the 11th season of the Polish I liga under its current title, and the 71st season of the second highest division in the Polish football league system since its establishment in 1949. The league was operated by the PZPN. The league was contested by 18 teams. The season was played in a round-robin tournament. The season started on 20 July 2018 and will conclude on 19 May 2019.

Changes from last season
The following teams have changed division since the 2017–18 season.

To I liga
Relegated from Ekstraklasa Promoted from II liga
 * Bruk-Bet Termalica Nieciecza
 * Sandecja Nowy Sącz
 * GKS Jastrzębie
 * ŁKS Łódź
 * Warta Poznań
 * Garbarnia Kraków

From I liga
Promoted to Ekstraklasa Relegated to II liga
 * Miedź Legnica
 * Zagłębie Sosnowiec
 * Pogoń Siedlce
 * Górnik Łęczna
 * Olimpia Grudziądz
 * Ruch Chorzów

Stadiums and locations

 * 1)  Garbarnia Kraków played their home games in Stadion im. Henryka Reymana until their home ground (Stadion Garbarni) fulfills license requirements.