| Official Name: | Qaem Shahr |
| Native Name: | Persian: قائمشهر |
| Settlement Type: | City |
| Mapsize: | 150px |
| Pushpin Map: | Iran |
| Coordinates: | 36.4636°N 52.8581°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name1: | Mazandaran |
| Subdivision Name2: | Qaem Shahr |
| Subdivision Name3: | Central |
| Area Total Km2: | 45 |
| Population Total: | 204953 |
| Population Urban: | 247953 [2] |
| Population As Of: | 2016 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Qaem Shahr (Persian: قائمشهر;) is a city in the Central District of Qaem Shahr County, Mazandaran province, Iran, serving as capital of both the county and the district.[3] Originally known as Ŝâhi (Shahi) was used until the Iranian Revolution in 1979 when the city acquired its current name.
In 1951, Qaem Shahr's population was around 18,000, growing to 123,684 in 1991. At the time of the 2006 National Census, the city's population was 174,246 in 48,055 households.[4] The following census in 2011 counted 196,050 people in 60,347 households.[5] The 2016 census measured the population of the city as 204,953 people in 68,407 households.[6]
The city is 228km (142miles) northeast of Tehran via road 79 which passes through Shirgah, Pol-e Sefid and Firuzkuh. It is also 19km (12miles) southeast of Babol; and 23km (14miles) southwest of Sari, the capital of the province, connected to both by road 22.[7]
Qaem Shahr is where the North Iranian railway quits the fertile plains of Mazandaran to cross the highest mountain range of the Middle East, the Alborz.
Qaem Shahr is one of the sports magnets in Iran. World and Olympic champion weightlifter Behdad Salimi hails from Qaem Shahr.