The 1985–86 Divizia B was the 46th 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.
Team changes
To Divizia B
Promoted from Divizia C
Minerul Vatra Dornei
Aripile Bacău
Delta Tulcea
Dunărea Călărași
ICSIM București
Muscelul Câmpulung
Electroputere Craiova
Metalul Bocșa
Înfrățirea Oradea
CIL Sighetu Marmației
Mecanica Orăștie
ICIM Brașov
Relegated from Divizia A
Jiul Petroșani
Baia Mare
Politehnica Iași
From Divizia B
Relegated to Divizia C
FEPA 74 Bârlad
Metalul București
Metalurgistul Cugir
Metalul Mangalia
Unirea Alexandria
Sticla Arieșul Turda
Partizanul Bacău
Autobuzul București
Gloria Reșița
Unirea Dinamo Focșani
Minerul Motru
IS Câmpia Turzii
Promoted to Divizia A
Petrolul Ploiești
Dinamo Victoria București
Universitatea Cluj
Renamed teams
CSM Drobeta-Turnu Severin was renamed as AS Drobeta-Turnu Severin.
FC Baia Mare was renamed as FC Maramureș Baia Mare.
Flacăra-Automecanica Moreni was renamed as Flacăra Moreni.
IP Aluminiu Slatina was renamed as Sportul Muncitoresc Slatina.