The 1978–79 Divizia B was the 39th 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.
Progresul București was renamed as Progresul Vulcan București.
Ceahlăul Piatra Neamț and Relonul Săvinești merged, the second one being absorbed by the first one.
After the merge, Ceahlăul was renamed as Relon Ceahlăul Piatra Neamț.