The 1947–48 Divizia B was the ninth season of the second tier of the Romanian football league system. The format was changed from three series to four series, each one of them having 16 teams. The winners of the series were supposed to promote in the Divizia A, but finally only two of them promoted. Next season (1948–49) the format would be changed again, this time in two series of 14 teams, therefore in this season relegated all the teams ranked below the 7th place, a total of 36 teams (9x4) plus the worst two ranked on the 7th place.