North Savadkuh County () is in Mazandaran province, Iran. Its capital is the city of Shirgah.
In 2013, Shirgah District was separated from Savadkuh County in the establishment of North Savadkuh County, which was divided into two districts of two rural districts each, with Shirgah as its capital and only city at the time.
At the time of the 2016 National Census, the county's population was 24,834 in 8,476 households.
North Savadkuh County's population and administrative structure are shown in the following table.