Sheshtamad County () is located in Razavi Khorasan province, Iran. Its capital is the city of Sheshtomad, whose population at the time of the 2016 National Census was 3,108 in 920 households.
In 2020, Sheshtamad District was separated from Sabzevar County in the establishment of Sheshtamad County, which was divided into two districts of two rural districts each, with Sheshtomad as its capital and only city at the time. The village of Shamkan was converted to a city in 2022.
Sheshtamad County's administrative structure is shown in the following table.