1979–80 Divizia B

The 1979–80 Divizia B was the 40th season of the second tier of the Romanian football league system.

The format has been maintained to three series, each of them having 18 teams. At the end of the season the winners of the series promoted to Divizia A and the last four places from each series relegated to Divizia C.

To Divizia B
Promoted from Divizia C
 * CS Botoșani
 * Energia Gheorghiu-Dej
 * Unirea Focșani
 * Cimentul Medgidia
 * Mecanică Fină București
 * Flacăra-Automecanica Moreni
 * Pandurii Târgu Jiu
 * Unirea Alba Iulia
 * Strungul Arad
 * Someșul Satu Mare
 * Carpați Mârșa
 * Viitorul Gheorgheni

Relegated from Divizia A
 * Corvinul Hunedoara
 * UTA Arad
 * Bihor Oradea

From Divizia B
Relegated to Divizia C
 * Relon Ceahlăul Piatra Neamț
 * Drobeta Turnu-Severin
 * Mureșul Deva
 * Oltul Sfântu Gheorghe
 * Electroputere Craiova
 * CIL Sighetu Marmației
 * Victoria Tecuci
 * SN Oltenița
 * Victoria Călan
 * Constructorul Iași
 * Chimia Brazi
 * CFR Timișoara

Promoted to Divizia A
 * FCM Galați
 * Viitorul Scornicești
 * Universitatea Cluj

Renamed teams
Dinamo Slatina was renamed as Energia Slatina.

Steagul Roșu Brașov was renamed as FCM Brașov.