The 1949–50 Nemzeti Bajnokság III season was the 6th edition of the Nemzeti Bajnokság III.

League tables

Bíró Dezső group

Notes: The top two teams advanced to NB II, while the last-place team was relegated to BLASz Division I.

Debrecen-Nyíregyháza group

Notes: The Mándok–Berettyóújfalu match was canceled; Mándok was awarded the two points with a 0–0 result.

Győr-Szombathely group

Notes: The champion was promoted to NB II, while the last-place team was relegated to the West Transdanubian ALSz First Division.

Lénárt group

Notes: The top two finishers advanced to NB II, while 15th-place Chinoin Lombik SE was relegated to the BLASz First Division.

Miskolc-Salgótarján group

Notes: First-place Egri EszTK was promoted to NB II, while the bottom two teams were relegated to the Northwest Hungarian and North Hungarian LASz leagues, respectively.

Pécs-Kaposvár group

Notes: The champion was promoted to NB II, while 15th-place Szekszárdi Törekvés MSE was relegated to the Southwest Hungarian LASz.

Pestvidék-Székesfehérvár group

Szeged-Kiskunhalas group

Notes: The group leader, Szegedi Honvéd SE, was promoted to NB II; the 15th-place team was relegated to the South Hungarian LASz First Division; the last-place team was dissolved through a merger.

Szolnok-Békéscsaba group

Notes: The results of missing matches not listed in the source table have been added to the final standings. The group winner, Gyulai SzSE, was promoted to NB II, while the bottom two teams were relegated to the Southeast Hungarian and Central Hungarian LASz Division I, respectively.

See also 1949–50 Magyar Kupa 1949–50 Nemzeti Bajnokság I 1949–50 Nemzeti Bajnokság II

References