| En Name: | Oktyabrsky District |
| Ru Name: | Октябрьский район |
| Image View: | Бассейн речки Усолки - panoramio.jpg |
| Coordinates: | 52.35°N 85°W |
| Image Coa: | Coat of Arms of Oktyabrsky rayon (Orenburg oblast).png |
| Federal Subject: | Orenburg Oblast |
| Adm Data As Of: | 2016 |
| Adm Ctr Type: | selo |
| Adm Ctr Name: | Oktyabrskoye |
| Selsoviet Type1: | Selsoviets |
| No Of Selsoviets Type1: | 16 |
| No Of Rural Localities: | 46 |
| Mun Data As Of: | August 2015 |
| Mun Formation1: | Oktyabrsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 0 |
| Mun Formation1 No Of Rural Settlements: | 14 |
| Area Km2: | 2700 |
| Pop 2010Census: | 20018 |
| Urban Pop 2010Census: | 0% |
| Rural Pop 2010Census: | 100% |
| Established Date: | May 30, 1927 |
| Prev Name1: | Kashirinsky District |
| Prev Name1 Date: | 1935 |
| Website: | http://mo-ok.orb.ru |
| Date: | October 2017 |
| Population of Oktyabrsky District | |
| Label1: | 2010 Census |
| Data1: | 20,018 |
| Label2: | 2002 Census |
| Data2: | 22,005 |
| Label3: | 1989 Census |
| Data3: | 22,180 |
| Label4: | 1979 Census |
| Data4: | 22,529 |
Oktyabrsky District (ru|Октя́брьский райо́н) is an administrative[1] and municipal[2] district (raion), one of the thirty-five in Orenburg Oblast, Russia. It is located in the center of the oblast and borders Kuyurgazinsky District of the Republic of Bashkortostan and Sharlyksky District in the north, Tyulgansky District in the east, Sakmarsky District in the south, and Alexandrovsky and Perevolotsky Districts in the west.[3] The area of the district is 2700km2. Its administrative center is the rural locality (a selo) of Oktyabrskoye. As of the 2010 Census, the total population of the district was 20,018, with the population of Oktyabrskoye accounting for 38.5% of that number.
Kashirinsky District (Russian: Каширинский район) was established on May 30, 1927, when Orenburg Governorate was divided into districts. In 1935, the district was given its present name. On January 12, 1965, Belozersky District was merged into Oktyabrsky District, thus establishing it in its modern borders.