Kojid Rural District (Persian: دهستان كجيد) is in Rankuh District of Amlash County, Gilan province, Iran. Its capital is the village of Kojid.

At the 2006 census, the rural district's population was 903 in 307 households. There were 841 inhabitants in 309 households at the following census of 2011. At the most recent census of 2016, the population of the rural district was 879 in 353 households. The most populous of its 19 villages was Dimajankesh, with 214 people.