| En Name: | Petrovsk-Zabaykalsky |
| Ru Name: | Петровск-Забайкальский |
| Coordinates: | 51.2667°N 158°W |
| Map Label Position: | right |
| Image Coa: | Coat_of_Arms_of_Petrovsk-Zabaikalsky_(Chita_oblast)_(1984).png |
| Federal Subject: | Zabaykalsky Krai |
| Adm Data As Of: | January 2012 |
| Adm District Jur: | Petrovsk-Zabaykalsky District |
| Adm Ctr Of: | Petrovsk-Zabaykalsky District |
| Inhabloc Cat: | Town |
| Mun Data As Of: | December 2009 |
| Urban Okrug Jur: | Petrovsk-Zabaykalsky Urban Okrug |
| Urban Okrug Jur Ref: | [1] |
| Mun Admctr Of: | Petrovsk-Zabaykalsky Urban Okrug |
| Pop 2010Census: | 18549 |
| Established Date: | 1789 |
| Current Cat Date: | 1926 |
| Prev Name1: | Petrovsky Zavod |
| Prev Name1 Date: | 1926 |
| Date: | March 2012 |
Petrovsk-Zabaykalsky (Russian: Петровск-Забайкальский|p=pʲɪˈtrofsk zəbɐjˈkalʲskʲɪj) is a town and the administrative center of Petrovsk-Zabaykalsky District of Zabaykalsky Krai, Russia, located along the Balyaga River in the valley between Zagan-Daban and Zagorinsky mountain ranges, 413km (257miles) southwest of Chita. Population:
Before the exploration expeditions of the Russian Cossacks in the 17th century, the future Petrovsk-Zabaykalsky's location was a route junction of nomadic Buryat tribes. Peter the Great granted the heads of the tribes with principality. The settlement, founded in 1789 and known then as Petrovsky Zavod (Russian: Петровский Завод), grew and developed around its iron refinery. From 1830 to 1839, it was a detention place for seventy-one Decembrists and ten of their wives, who were sent here from Chita. There is a commemorating mark on the railway station. In a restored house of the princess Ekaterina Troubetskaya, wife of Sergey Trubetskoy, was organized a museum, which opened on October 10, 1980. In Petrovsk-Zabaykalsky's historical district there are several buildings related to the times of Decembrists in the town.
In 1926, the settlement was granted town status and given its present name.
In 1940, a new iron refinery was built, which was one of the most important iron factories in the region during the following decades.
Within the framework of administrative divisions, Petrovsk-Zabaykalsky serves as the administrative center of Petrovsk-Zabaykalsky District and is subordinated to it.[2] As a municipal division, the town of Petrovsk-Zabaykalsky is incorporated as Petrovsk-Zabaykalsky Urban Okrug.[3]
There is a glass plant, a sawmill, and food factories in Petrovsk-Zabaykalsky. The town is a railroad station on the Trans-Siberian Railway, and on the Chita–Ulan-Ude route.