Sheshtomad (, also Romanized as Sheshtamad) is a city in, and the capital of, the Central District of Sheshtamad County, Razavi Khorasan province, Iran, and also serves as capital of the county.
At the 2006 census, its population was 2,246 in 671 households, when it was in the former Sheshtamad District of Sabzevar County. The following census in 2011 counted 4,172 people in 1,099 households. The latest census in 2016 showed a population of 3,108 people in 920 households.
In February 2019, the district was separated from the county to establish Sheshtamad County and divided into two districts, each with two rural districts. The city of Sheshtomad became the new county's capital. The village of Shamkan was later elevated to the status of a city and became the capital of Shamkan District.