Qaleh Biyaban Rural District () is in Jannat District of Darab County, Fars province, Iran. Its capital is the village of Qaleh Biyaban.
At the National Census of 2006, its population (as a part of the Central District) was 5,951 in 1,489 households. There were 7,083 inhabitants in 1,931 households at the following census of 2011, by which time the rural district had been separated from the district in the establishment of Jannat District. At the most recent census of 2016, the population of the rural district was 7,472 in 2,236 households. The largest of its 60 villages was Qaleh Biyaban, with 1,657 people.