| En Name: | Petrovsk-Zabaykalsky District |
| Ru Name: | Петровск-Забайкальский район |
| Image View: | ВЛ80Р-1605А-1668.jpg |
| Coordinates: | 50.9833°N 112°W |
| Image Coa: | Coat of Arms of Petrovsk-Zabaikalsky (Chita oblast) (1984).png |
| Federal Subject: | Zabaykalsky Krai |
| Adm Data As Of: | January 2014 |
| Adm Ctr Type: | town |
| Adm Ctr Name: | Petrovsk-Zabaykalsky |
| No Of Cities Towns: | 1 |
| No Of Urban-Type Settlements: | 3 |
| No Of Rural Localities: | 22 |
| Mun Data As Of: | October 2014 |
| Mun Formation1: | Petrovsk-Zabaykalsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 3 |
| Mun Formation1 No Of Rural Settlements: | 10 |
| Mun Formation1 Counts Ref: | [1] |
| Mun Formation2: | Petrovsk-Zabaykalsky Urban Okrug |
| Area Km2: | 8700 |
| Pop 2010Census: | 37900 |
| Urban Pop 2010Census: | 74.0% |
| Rural Pop 2010Census: | 26.0% |
| Established Date: | January 4, 1926 |
| Website: | http://петровзаб.забайкальскийкрай.рф |
| Date: | September 2016 |
| Population of Petrovsk-Zabaykalsky District | |
| Label1: | 2010 Census |
| Data1: | 37,900 |
| Label2: | 2002 Census |
| Data2: | 21,110 |
| Label3: | 1989 Census |
| Data3: | 24,657 |
| Label4: | 1979 Census |
| Data4: | 25,757 |
Petrovsk-Zabaykalsky District (ru|Петро́вск-Забайка́льский райо́н) is an administrative district (raion), one of the thirty-one in Zabaykalsky Krai, Russia.[2] It is located in the southwest of the krai, and borders Khiloksky District in the east, Krasnochikoysky District in the south, and Bichursky District, Kizhinginsky District, Mukhorshibirsky District, Zaigrayevsky District of the Republic of Buryatia in the west and north. The area of the district is 8700km2.[3] Its administrative center is the town of Petrovsk-Zabaykalsky. As of the 2010 Census, the total population of the district was 37,900, with the population of the administrative center accounting for 48.9% of that number.
The district was established on January 4, 1926.
Within the framework of administrative divisions, Petrovsk-Zabaykalsky District is one of the thirty-one in the krai. The town of Petrovsk-Zabaykalsky serves as its administrative center.
As a municipal division, the territory of the district is split between two municipal formations—Petrovsk-Zabaykalsky Municipal District,[4] to which three urban-type settlements and twenty-two of the administrative district's rural localities belong,[5] and Petrovsk-Zabaykalsky Urban Okrug, which covers the rest of the administrative district's territory, including the town of Petrovsk-Zabaykalsky.[6]