| En Name: | Kolosovsky District |
| Ru Name: | Колосовский район |
| Coordinates: | 56.4644°N 73.6114°W |
| Image Coa: | Колосовский район.png |
| Federal Subject: | Omsk Oblast |
| Adm Data As Of: | December 2009 |
| Adm Ctr Type: | selo |
| Adm Ctr Name: | Kolosovka |
| Selsoviet Type1: | rural okrug |
| No Of Selsoviets Type1: | 11 |
| No Of Rural Localities: | 34 |
| Mun Data As Of: | July 2011 |
| Mun Formation1: | Kolosovsky Municipal District |
| Mun Formation1 No Of Urban Settlements: | 0 |
| Mun Formation1 No Of Rural Settlements: | 11 |
| Area Km2: | 4700 |
| Pop 2010Census: | 12803 |
| Urban Pop 2010Census: | 0% |
| Rural Pop 2010Census: | 100% |
| Website: | http://kolos.omskportal.ru/ |
| Date: | August 2011 |
Kolosovsky District (Russian: Колосо́вский райо́н) is an administrative[1] and municipal[2] district (raion), one of the thirty-two in Omsk Oblast, Russia. It is located in the center of the oblast. The area of the district is 4700km2.[3] Its administrative center is the rural locality (a selo) of Kolosovka. Population: 12,803 (2010 Census); The population of Kolosovka accounts for 41.5% of the district's total population.