The 1979–80 Divizia C was the 24th season of Liga III, the third tier of the Romanian football league system.
[1][2] Relegated from Divizia B Promoted from County Championship Promoted to Divizia B Relegated to County Championship
Gloria Drobeta-Turnu Severin was moved from Drobeta-Turnu Severin to Strehaia and was renamed as Gloria Strehaia.
Relonul Săvinești took the place of Bradul Roznov.
Automecanica București spared from relegation due to the withdrawal of Unirea Tricolor București