Jandaq (Persian: جندق)[a] is a city in the Central District of Khur and Biabanak County, Isfahan province, Iran, serving as the administrative center for Jandaq Rural District.

[4] The monuments of Jandaq include Jandaq Castle (or Fortress of Ardbil), which seems to date back to the Sasanian Empire, and which is known as the prison of Khosrow Anushirvān.

[5] At the time of the 2006 National Census, the city's population was 3,958 in 1,162 households, when it was in the former Khur and Biabanak District of Nain County.

[8] The 2016 census measured the population of the city as 4,665 people in 1,477 households.

This Khur and Biabanak County location article is a stub.