2023–24 III liga

The 2023–24 III liga is the 16th season of the fourth tier domestic division in the Polish football league system since its establishment in 2008 under its current title (III liga) and the 7th season under its current league division format. The league was operated by the Polish Football Association (PZPN).

The competition is contested by 72 clubs split geographically across 4 groups of 18 teams, with the winners of each group gaining promotion to the II liga. The season is played in a round-robin tournament. It will begin on 5 August 2023 and will conclude on 9 June 2024. The teams included semi-professional clubs (although a few are professional) and the reserve teams of professional clubs.

Format
72 teams were divided into four groups according to geographical criteria:
 * Group I (Łódź – Masovian – Podlaskie – Warmian-Masurian)
 * Group II (Kuyavian-Pomeranian – Greater Poland – Pomeranian – West Pomeranian)
 * Group III (Lower Silesian – Lubusz – Opole – Silesian)
 * Group IV (Świętokrzyskie – Lesser Poland – Lublin – Podkarpackie)

Since 2021–22 season each group of III liga was operated by Polish Football Association (PZPN), not a different voivodship football association.

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