| En Name: | Polessky District |
| Ru Name: | Полесский район |
| Image View: | Labiau 4.jpg |
| Coordinates: | 54.85°N 51°W |
| Image Coa: | Flag of Polessk.png |
| Federal Subject: | Kaliningrad Oblast |
| Adm Data As Of: | November 2011 |
| Adm Ctr Type: | town |
| Adm Ctr Name: | Polessk |
| Town Of District Significance Type: | Towns of district significance |
| No Of Towns Of District Significance: | 1 |
| Selsoviet Type1: | Rural okrugs |
| No Of Selsoviets Type1: | 4 |
| No Of Cities Towns: | 1 |
| No Of Rural Localities: | 66 |
| Mun Data As Of: | July 2009 |
| Mun Formation1: | Polessky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 1 |
| Mun Formation1 No Of Rural Settlements: | 4 |
| Area Km2: | 834.3 |
| Pop 2010Census: | 19205 |
| Urban Pop 2010Census: | 39.5% |
| Rural Pop 2010Census: | 60.5% |
| Established Date: | April 7, 1946 |
| Prev Name1: | Labiausky District |
| Prev Name1 Date: | September 7, 1946 |
| Website: | http://polessk.gov39.ru |
| Date: | February 2012 |
| Bodystyle: | width:23.5em |
| Population of Polessky District | |
| Label1: | 2010 Census |
| Data1: | 19,205 |
| Label2: | 2002 Census |
| Data2: | 19,018 |
| Label3: | 1989 Census |
| Data3: | 16,911 |
| Label4: | 1979 Census |
| Data4: | 17,324 |
Polessky District (ru|Поле́сский райо́н) is an administrative district (raion), one of the fifteen in Kaliningrad Oblast, Russia.[1] As a municipal division, it is incorporated as Polessky Municipal District.[2] It is located in the center of the oblast. The area of the district is 834.3km2.[3] Its administrative center is the town of Polessk.[4] As of the 2010 Census, the total population of the district was 19,205, with the population of Polessk accounting for 39.5% of that number.
The district is situated in the center of the oblast, with the Curonian Lagoon to the north. The Deyma River, a branch of the Pregolya, flows through the district. Near Polessk, the Polessk Canal connects the Pregolya and the Neman Rivers, crossing a bog.
The district was established on April 7, 1946 as Labiausky District (Russian: Лабиауский район). It was given its present name on September 7, 1946.
Economy is focused on fishery and agriculture. The railway line from Kaliningrad to Sovetsk, and the Kaliningrad–Guryevsk–Polessk–Bolshakovo road lead parallel with the shore of the Curonian Lagoon.