The 1964–65 Divizia C was the 9th season of Liga III, the third tier of the Romanian football league system.
At the end of the season, the winners of the each series promoted to Divizia B and the last two places from each series relegated to Regional Championship.
Relegated from Divizia B Promoted from Regional Championship[3] Promoted to Divizia B Relegated to Regional Championship
Rapid Târgu Mureș was renamed as Unirea Târgu Mureș.
Chimia Onești was renamed as Chimia Gheorghe Gheorghiu-Dej, as from March 1965 the Onești town was renamed as Gheorghe Gheorghiu-Dej.