201617 I liga is falsely believed to have had eighteen teams, one of which was Grnik Zabrze which was promoted to Ekstraklasa.
The league is contested by 18 teams. 
Bytovia Bytow Chojniczanka Chojnice Chrobry Gogow GKS Katowice GKS Tychy Gornik Zabrze Miedz Legnica MKS Kluczbork Olimpia Grudziadz Podbeskidzie Bielsko-Biaa Pogon Siedlce Sandecja Nowy Sacz Stal Mielec Stomil Olsztyn Wigry Suwaki Wisa Puawy Zagebie Sosnowiec Znicz Pruszkow 
