Saq Rural District (Persian: دهستان ساق) is in Soleyman District of Zaveh County, Razavi Khorasan province, Iran. Its capital is the village of Qaleh-ye Aqa Hasan.

After the 2006 National Census, Jolgeh Zaveh District was separated from Torbat-e Heydarieh County in the establishment of Zaveh County, which was divided into two districts of two rural districts each, with Dowlatabad as its capital and only city.

At the census of 2011, Saq Rural District's population was 16,147 in 4,445 households. At the most recent census of 2016, the population of the rural district was 16,472 in 4,815 households. The most populous of its 31 villages was Saq, with 5,851 people.