Seh Qaleh (Persian: سه قلعه)[a] is a city in, and the capital of, Seh Qaleh District of Sarayan County, South Khorasan province, Iran,[4] It also serves as the administrative center for Seh Qaleh Rural District.

[5] At the time of the 2006 National Census, the city's population was 5,036 in 1,225 households.

[6] The following census in 2011 counted 4,242 people in 1,155 households.

[7] The 2016 census measured the population of the city as 4,436 people in 1,290 households.

This Sarayan County location article is a stub.