Kadkan (Persian: كدكن)[a] is a city in, and the capital of, Kadkan District of Torbat-e Heydarieh County, Razavi Khorasan province, Iran.

[4] It also serves as the administrative center for Kadkan Rural District.

[5] At the time of the 2006 National Census, the city's population was 3,166 in 840 households.

[7] The 2016 census measured the population of the city as 3,719 people in 1,164 households.

This Torbat-e Heydarieh County location article is a stub.