Fedagh Rural District (Persian: دهستان فداغ) is in the Central District of Gerash County, Fars province, Iran. Its capital is the village of Fedagh.

At the National Census of 2006, its population (as a part of the former Gerash District of Larestan County) was 5,210 in 1,027 households. There were 5,944 inhabitants in 1,562 households at the following census of 2011, by which time the district had been separated from the county in the establishment of Gerash County. At the most recent census of 2016, the population of the rural district was 8,689 in 1,992 households. The most populous of its 21 villages was Fedagh, with 6,533 people.