Sorkheh County () is in Semnan province, Iran. Its capital is the city of Sorkheh.
In 2012, Sorkheh District was separated from Semnan County in the establishment of Sorkheh County, which was divided into one district of two rural districts, with Sorkheh as its capital and only city at the time. In 2021, Emamzadeh Abdollah Rural District was created in the Central District, and Hafdar Rural District was separated from it in the formation of Hafdar District, including the new Momenabad Rural District.
At the time of the 2016 census, the county's population was 15,523 in 5,330 households.
Sorkheh County's population and administrative structure are shown in the following table.