The 1948–49 Divizia B was the 10th season of the second tier of the Romanian football league system.
The format was changed from four series of 16 teams to two series, each one of them having 14 teams.
Sparta Arad and CS Aninoasa were excluded from Divizia B. Crișana Oradea was renamed as CFR Oradea.
Phoenix Baia Mare and Minaur Baia Mare merged, the new formed team was named as CSM Baia Mare.
Ferar Cluj and CFR Cluj merged, Ferar being absorbed by CFR, also CFR Cluj was promoted to Divizia A in the place of Ferar.