Si Joval (Persian: سيجوال)[a] is a city in, and the capital of, Si Joval District of Torkaman County, Golestan province, Iran.

[4] At the time of the 2006 National Census, Si Joval's population was 3,026 in 631 households, when it was a village in Jafarbay-ye Jonubi Rural District of the Central District.

[6] The following census in 2011 counted 3,479 people in 856 households,[7] by which time villages had been separated from the rural district in the establishment of Si Joval District.

[4] The 2016 census measured the population of the village as 3,747 people in 976 households.

[2] After the census, Si Joval was elevated to the status of a city.