Manjilabad Rural District (Persian: دهستان منجیل‌آباد) is in the Central District of Robat Karim County, Tehran province, Iran. Its capital is the village of Manjilabad.

At the National Census of 2006, its population was 48,679 in 12,442 households. There were 77,681 inhabitants in 21,406 households at the following census of 2011. At the most recent census of 2016, the population of the rural district was 45,986 in 13,091 households. The most populous of its 27 villages was Alard, with 11,616 people.